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Finding the Fourth Proportional to 177.62, 266.76 and 145.17

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Solution

The fourth proportional to 177.62, 266.76 and 145.17 is: 218.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.62 : 266.76 = 145.17 : x
  2. Step 2: Convert to fraction form
    177.62/266.76 = 145.17/x
  3. Step 3: Cross multiply
    177.62x = 266.76 × 145.17
  4. Step 4: Simplify right side
    177.62x = 38,725.55
  5. Step 5: Solve for x
    x = 38,725.55/177.62
  6. Step 6: Final answer
    x = 218.03

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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.