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Finding the Fourth Proportional to 463.57, 639.72 and 267.08

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Solution

The fourth proportional to 463.57, 639.72 and 267.08 is: 368.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.57 : 639.72 = 267.08 : x
  2. Step 2: Convert to fraction form
    463.57/639.72 = 267.08/x
  3. Step 3: Cross multiply
    463.57x = 639.72 × 267.08
  4. Step 4: Simplify right side
    463.57x = 170,853.22
  5. Step 5: Solve for x
    x = 170,853.22/463.57
  6. Step 6: Final answer
    x = 368.56

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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.