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Finding the Fourth Proportional to 308.13, 462.33 and 171.18

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Solution

The fourth proportional to 308.13, 462.33 and 171.18 is: 256.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.13 : 462.33 = 171.18 : x
  2. Step 2: Convert to fraction form
    308.13/462.33 = 171.18/x
  3. Step 3: Cross multiply
    308.13x = 462.33 × 171.18
  4. Step 4: Simplify right side
    308.13x = 79,141.65
  5. Step 5: Solve for x
    x = 79,141.65/308.13
  6. Step 6: Final answer
    x = 256.84

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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.