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Finding the Fourth Proportional to 822.26, 1,134.51 and 468.20

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Solution

The fourth proportional to 822.26, 1,134.51 and 468.20 is: 645.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.26 : 1,134.51 = 468.20 : x
  2. Step 2: Convert to fraction form
    822.26/1,134.51 = 468.20/x
  3. Step 3: Cross multiply
    822.26x = 1,134.51 × 468.20
  4. Step 4: Simplify right side
    822.26x = 531,171.91
  5. Step 5: Solve for x
    x = 531,171.91/822.26
  6. Step 6: Final answer
    x = 645.99

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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.