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Finding the Fourth Proportional to 306.26, 458.60 and 169.15

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Solution

The fourth proportional to 306.26, 458.60 and 169.15 is: 253.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.26 : 458.60 = 169.15 : x
  2. Step 2: Convert to fraction form
    306.26/458.60 = 169.15/x
  3. Step 3: Cross multiply
    306.26x = 458.60 × 169.15
  4. Step 4: Simplify right side
    306.26x = 77,569.05
  5. Step 5: Solve for x
    x = 77,569.05/306.26
  6. Step 6: Final answer
    x = 253.28

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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.