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Finding the Fourth Proportional to 717.71, 1,074.23 and 471.13

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Solution

The fourth proportional to 717.71, 1,074.23 and 471.13 is: 705.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.71 : 1,074.23 = 471.13 : x
  2. Step 2: Convert to fraction form
    717.71/1,074.23 = 471.13/x
  3. Step 3: Cross multiply
    717.71x = 1,074.23 × 471.13
  4. Step 4: Simplify right side
    717.71x = 506,103.16
  5. Step 5: Solve for x
    x = 506,103.16/717.71
  6. Step 6: Final answer
    x = 705.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.