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Finding the Fourth Proportional to 371.65, 557.54 and 166.22

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Solution

The fourth proportional to 371.65, 557.54 and 166.22 is: 249.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.65 : 557.54 = 166.22 : x
  2. Step 2: Convert to fraction form
    371.65/557.54 = 166.22/x
  3. Step 3: Cross multiply
    371.65x = 557.54 × 166.22
  4. Step 4: Simplify right side
    371.65x = 92,674.30
  5. Step 5: Solve for x
    x = 92,674.30/371.65
  6. Step 6: Final answer
    x = 249.36

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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.