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Finding the Fourth Proportional to 479.90, 715.71 and 471.26

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Solution

The fourth proportional to 479.90, 715.71 and 471.26 is: 702.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.90 : 715.71 = 471.26 : x
  2. Step 2: Convert to fraction form
    479.90/715.71 = 471.26/x
  3. Step 3: Cross multiply
    479.90x = 715.71 × 471.26
  4. Step 4: Simplify right side
    479.90x = 337,281.92
  5. Step 5: Solve for x
    x = 337,281.92/479.90
  6. Step 6: Final answer
    x = 702.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.