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Finding the Fourth Proportional to 477.60, 658.58 and 330.32

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Solution

The fourth proportional to 477.60, 658.58 and 330.32 is: 455.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.60 : 658.58 = 330.32 : x
  2. Step 2: Convert to fraction form
    477.60/658.58 = 330.32/x
  3. Step 3: Cross multiply
    477.60x = 658.58 × 330.32
  4. Step 4: Simplify right side
    477.60x = 217,537.20
  5. Step 5: Solve for x
    x = 217,537.20/477.60
  6. Step 6: Final answer
    x = 455.48

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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.