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Finding the Fourth Proportional to 177.38, 244.79 and 103.70

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Solution

The fourth proportional to 177.38, 244.79 and 103.70 is: 143.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.38 : 244.79 = 103.70 : x
  2. Step 2: Convert to fraction form
    177.38/244.79 = 103.70/x
  3. Step 3: Cross multiply
    177.38x = 244.79 × 103.70
  4. Step 4: Simplify right side
    177.38x = 25,384.72
  5. Step 5: Solve for x
    x = 25,384.72/177.38
  6. Step 6: Final answer
    x = 143.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.