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Finding the Fourth Proportional to 409.50, 614.14 and 116.96

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Solution

The fourth proportional to 409.50, 614.14 and 116.96 is: 175.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.50 : 614.14 = 116.96 : x
  2. Step 2: Convert to fraction form
    409.50/614.14 = 116.96/x
  3. Step 3: Cross multiply
    409.50x = 614.14 × 116.96
  4. Step 4: Simplify right side
    409.50x = 71,829.81
  5. Step 5: Solve for x
    x = 71,829.81/409.50
  6. Step 6: Final answer
    x = 175.41

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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.