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Finding the Fourth Proportional to 466.97, 645.17 and 397.76

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Solution

The fourth proportional to 466.97, 645.17 and 397.76 is: 549.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.97 : 645.17 = 397.76 : x
  2. Step 2: Convert to fraction form
    466.97/645.17 = 397.76/x
  3. Step 3: Cross multiply
    466.97x = 645.17 × 397.76
  4. Step 4: Simplify right side
    466.97x = 256,617.60
  5. Step 5: Solve for x
    x = 256,617.60/466.97
  6. Step 6: Final answer
    x = 549.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.