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Finding the Fourth Proportional to 477.98, 658.23 and 330.35

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Solution

The fourth proportional to 477.98, 658.23 and 330.35 is: 454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.98 : 658.23 = 330.35 : x
  2. Step 2: Convert to fraction form
    477.98/658.23 = 330.35/x
  3. Step 3: Cross multiply
    477.98x = 658.23 × 330.35
  4. Step 4: Simplify right side
    477.98x = 217,447.30
  5. Step 5: Solve for x
    x = 217,447.30/477.98
  6. Step 6: Final answer
    x = 454.93

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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.