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Finding the Fourth Proportional to 409.80, 614.16 and 166.18

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Solution

The fourth proportional to 409.80, 614.16 and 166.18 is: 249.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.80 : 614.16 = 166.18 : x
  2. Step 2: Convert to fraction form
    409.80/614.16 = 166.18/x
  3. Step 3: Cross multiply
    409.80x = 614.16 × 166.18
  4. Step 4: Simplify right side
    409.80x = 102,061.11
  5. Step 5: Solve for x
    x = 102,061.11/409.80
  6. Step 6: Final answer
    x = 249.05

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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.