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Finding the Fourth Proportional to 308.18, 462.29 and 88.81

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Solution

The fourth proportional to 308.18, 462.29 and 88.81 is: 133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.18 : 462.29 = 88.81 : x
  2. Step 2: Convert to fraction form
    308.18/462.29 = 88.81/x
  3. Step 3: Cross multiply
    308.18x = 462.29 × 88.81
  4. Step 4: Simplify right side
    308.18x = 41,054.38
  5. Step 5: Solve for x
    x = 41,054.38/308.18
  6. Step 6: Final answer
    x = 133.21

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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.