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Finding the Fourth Proportional to 486.10, 728.97 and 177.86

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Solution

The fourth proportional to 486.10, 728.97 and 177.86 is: 266.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.10 : 728.97 = 177.86 : x
  2. Step 2: Convert to fraction form
    486.10/728.97 = 177.86/x
  3. Step 3: Cross multiply
    486.10x = 728.97 × 177.86
  4. Step 4: Simplify right side
    486.10x = 129,654.60
  5. Step 5: Solve for x
    x = 129,654.60/486.10
  6. Step 6: Final answer
    x = 266.72

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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.