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Finding the Fourth Proportional to 177.07, 244.45 and 111.61

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Solution

The fourth proportional to 177.07, 244.45 and 111.61 is: 154.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.07 : 244.45 = 111.61 : x
  2. Step 2: Convert to fraction form
    177.07/244.45 = 111.61/x
  3. Step 3: Cross multiply
    177.07x = 244.45 × 111.61
  4. Step 4: Simplify right side
    177.07x = 27,283.06
  5. Step 5: Solve for x
    x = 27,283.06/177.07
  6. Step 6: Final answer
    x = 154.08

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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.