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Finding the Fourth Proportional to 306.13, 458.89 and 141.65

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Solution

The fourth proportional to 306.13, 458.89 and 141.65 is: 212.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.13 : 458.89 = 141.65 : x
  2. Step 2: Convert to fraction form
    306.13/458.89 = 141.65/x
  3. Step 3: Cross multiply
    306.13x = 458.89 × 141.65
  4. Step 4: Simplify right side
    306.13x = 65,001.24
  5. Step 5: Solve for x
    x = 65,001.24/306.13
  6. Step 6: Final answer
    x = 212.33

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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.