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Finding the Fourth Proportional to 468.47, 702.68 and 381.40

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Solution

The fourth proportional to 468.47, 702.68 and 381.40 is: 572.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.47 : 702.68 = 381.40 : x
  2. Step 2: Convert to fraction form
    468.47/702.68 = 381.40/x
  3. Step 3: Cross multiply
    468.47x = 702.68 × 381.40
  4. Step 4: Simplify right side
    468.47x = 268,002.15
  5. Step 5: Solve for x
    x = 268,002.15/468.47
  6. Step 6: Final answer
    x = 572.08

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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.