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Finding the Fourth Proportional to 375.29, 562.72 and 115.22

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Solution

The fourth proportional to 375.29, 562.72 and 115.22 is: 172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.29 : 562.72 = 115.22 : x
  2. Step 2: Convert to fraction form
    375.29/562.72 = 115.22/x
  3. Step 3: Cross multiply
    375.29x = 562.72 × 115.22
  4. Step 4: Simplify right side
    375.29x = 64,833.21
  5. Step 5: Solve for x
    x = 64,833.21/375.29
  6. Step 6: Final answer
    x = 172.76

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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.