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Finding the Fourth Proportional to 306.27, 459.18 and 169.20

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Solution

The fourth proportional to 306.27, 459.18 and 169.20 is: 253.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.27 : 459.18 = 169.20 : x
  2. Step 2: Convert to fraction form
    306.27/459.18 = 169.20/x
  3. Step 3: Cross multiply
    306.27x = 459.18 × 169.20
  4. Step 4: Simplify right side
    306.27x = 77,693.26
  5. Step 5: Solve for x
    x = 77,693.26/306.27
  6. Step 6: Final answer
    x = 253.68

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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.