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Finding the Fourth Proportional to 308.68, 463.16 and 135.48

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Solution

The fourth proportional to 308.68, 463.16 and 135.48 is: 203.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.68 : 463.16 = 135.48 : x
  2. Step 2: Convert to fraction form
    308.68/463.16 = 135.48/x
  3. Step 3: Cross multiply
    308.68x = 463.16 × 135.48
  4. Step 4: Simplify right side
    308.68x = 62,748.92
  5. Step 5: Solve for x
    x = 62,748.92/308.68
  6. Step 6: Final answer
    x = 203.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.