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Finding the Fourth Proportional to 440.80, 658.33 and 354.28

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Solution

The fourth proportional to 440.80, 658.33 and 354.28 is: 529.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.80 : 658.33 = 354.28 : x
  2. Step 2: Convert to fraction form
    440.80/658.33 = 354.28/x
  3. Step 3: Cross multiply
    440.80x = 658.33 × 354.28
  4. Step 4: Simplify right side
    440.80x = 233,233.15
  5. Step 5: Solve for x
    x = 233,233.15/440.80
  6. Step 6: Final answer
    x = 529.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.