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Finding the Fourth Proportional to 822.76, 1,135.46 and 473.50

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Solution

The fourth proportional to 822.76, 1,135.46 and 473.50 is: 653.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.76 : 1,135.46 = 473.50 : x
  2. Step 2: Convert to fraction form
    822.76/1,135.46 = 473.50/x
  3. Step 3: Cross multiply
    822.76x = 1,135.46 × 473.50
  4. Step 4: Simplify right side
    822.76x = 537,640.31
  5. Step 5: Solve for x
    x = 537,640.31/822.76
  6. Step 6: Final answer
    x = 653.46

Related Problems

Find fourth proportional to 411.38, 567.73 and 236.75
Half scale
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Double scale
Find fourth proportional to 823.76, 1,136.84 and 474.50
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.