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Finding the Fourth Proportional to 468.48, 702.18 and 425.28

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Solution

The fourth proportional to 468.48, 702.18 and 425.28 is: 637.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.48 : 702.18 = 425.28 : x
  2. Step 2: Convert to fraction form
    468.48/702.18 = 425.28/x
  3. Step 3: Cross multiply
    468.48x = 702.18 × 425.28
  4. Step 4: Simplify right side
    468.48x = 298,623.11
  5. Step 5: Solve for x
    x = 298,623.11/468.48
  6. Step 6: Final answer
    x = 637.43

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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.