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Finding the Fourth Proportional to 177.04, 265.50 and 85.66

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Solution

The fourth proportional to 177.04, 265.50 and 85.66 is: 128.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.04 : 265.50 = 85.66 : x
  2. Step 2: Convert to fraction form
    177.04/265.50 = 85.66/x
  3. Step 3: Cross multiply
    177.04x = 265.50 × 85.66
  4. Step 4: Simplify right side
    177.04x = 22,742.73
  5. Step 5: Solve for x
    x = 22,742.73/177.04
  6. Step 6: Final answer
    x = 128.46

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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.