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Finding the Fourth Proportional to 560.76, 773.46 and 386.52

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Solution

The fourth proportional to 560.76, 773.46 and 386.52 is: 533.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.76 : 773.46 = 386.52 : x
  2. Step 2: Convert to fraction form
    560.76/773.46 = 386.52/x
  3. Step 3: Cross multiply
    560.76x = 773.46 × 386.52
  4. Step 4: Simplify right side
    560.76x = 298,957.76
  5. Step 5: Solve for x
    x = 298,957.76/560.76
  6. Step 6: Final answer
    x = 533.13

Related Problems

Find fourth proportional to 280.38, 386.73 and 193.26
Half scale
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Double scale
Find fourth proportional to 561.76, 774.84 and 387.52
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.