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Finding the Fourth Proportional to 463.66, 639.96 and 267.28

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Solution

The fourth proportional to 463.66, 639.96 and 267.28 is: 368.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.66 : 639.96 = 267.28 : x
  2. Step 2: Convert to fraction form
    463.66/639.96 = 267.28/x
  3. Step 3: Cross multiply
    463.66x = 639.96 × 267.28
  4. Step 4: Simplify right side
    463.66x = 171,048.51
  5. Step 5: Solve for x
    x = 171,048.51/463.66
  6. Step 6: Final answer
    x = 368.91

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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.