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Finding the Fourth Proportional to 177.99, 266.95 and 112.91

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Solution

The fourth proportional to 177.99, 266.95 and 112.91 is: 169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.99 : 266.95 = 112.91 : x
  2. Step 2: Convert to fraction form
    177.99/266.95 = 112.91/x
  3. Step 3: Cross multiply
    177.99x = 266.95 × 112.91
  4. Step 4: Simplify right side
    177.99x = 30,139.50
  5. Step 5: Solve for x
    x = 30,139.50/177.99
  6. Step 6: Final answer
    x = 169.33

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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.