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Finding the Fourth Proportional to 477.45, 658.80 and 267.57

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Solution

The fourth proportional to 477.45, 658.80 and 267.57 is: 369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.45 : 658.80 = 267.57 : x
  2. Step 2: Convert to fraction form
    477.45/658.80 = 267.57/x
  3. Step 3: Cross multiply
    477.45x = 658.80 × 267.57
  4. Step 4: Simplify right side
    477.45x = 176,275.12
  5. Step 5: Solve for x
    x = 176,275.12/477.45
  6. Step 6: Final answer
    x = 369.20

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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.