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Finding the Fourth Proportional to 285.30, 425.95 and 267.92

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Solution

The fourth proportional to 285.30, 425.95 and 267.92 is: 400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.30 : 425.95 = 267.92 : x
  2. Step 2: Convert to fraction form
    285.30/425.95 = 267.92/x
  3. Step 3: Cross multiply
    285.30x = 425.95 × 267.92
  4. Step 4: Simplify right side
    285.30x = 114,120.52
  5. Step 5: Solve for x
    x = 114,120.52/285.30
  6. Step 6: Final answer
    x = 400.00

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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.