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Finding the Fourth Proportional to 468.92, 702.56 and 315.30

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Solution

The fourth proportional to 468.92, 702.56 and 315.30 is: 472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.92 : 702.56 = 315.30 : x
  2. Step 2: Convert to fraction form
    468.92/702.56 = 315.30/x
  3. Step 3: Cross multiply
    468.92x = 702.56 × 315.30
  4. Step 4: Simplify right side
    468.92x = 221,517.17
  5. Step 5: Solve for x
    x = 221,517.17/468.92
  6. Step 6: Final answer
    x = 472.40

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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.