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Finding the Fourth Proportional to 169.02, 252.21 and 151.72

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Solution

The fourth proportional to 169.02, 252.21 and 151.72 is: 226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.02 : 252.21 = 151.72 : x
  2. Step 2: Convert to fraction form
    169.02/252.21 = 151.72/x
  3. Step 3: Cross multiply
    169.02x = 252.21 × 151.72
  4. Step 4: Simplify right side
    169.02x = 38,265.30
  5. Step 5: Solve for x
    x = 38,265.30/169.02
  6. Step 6: Final answer
    x = 226.40

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.