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Finding the Fourth Proportional to 439.04, 658.16 and 178.86

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Solution

The fourth proportional to 439.04, 658.16 and 178.86 is: 268.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.04 : 658.16 = 178.86 : x
  2. Step 2: Convert to fraction form
    439.04/658.16 = 178.86/x
  3. Step 3: Cross multiply
    439.04x = 658.16 × 178.86
  4. Step 4: Simplify right side
    439.04x = 117,718.50
  5. Step 5: Solve for x
    x = 117,718.50/439.04
  6. Step 6: Final answer
    x = 268.13

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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.