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Finding the Fourth Proportional to 302.59, 454.20 and 165.91

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Solution

The fourth proportional to 302.59, 454.20 and 165.91 is: 249.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.59 : 454.20 = 165.91 : x
  2. Step 2: Convert to fraction form
    302.59/454.20 = 165.91/x
  3. Step 3: Cross multiply
    302.59x = 454.20 × 165.91
  4. Step 4: Simplify right side
    302.59x = 75,356.32
  5. Step 5: Solve for x
    x = 75,356.32/302.59
  6. Step 6: Final answer
    x = 249.04

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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.