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Finding the Fourth Proportional to 177.19, 265.90 and 68.98

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Solution

The fourth proportional to 177.19, 265.90 and 68.98 is: 103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.19 : 265.90 = 68.98 : x
  2. Step 2: Convert to fraction form
    177.19/265.90 = 68.98/x
  3. Step 3: Cross multiply
    177.19x = 265.90 × 68.98
  4. Step 4: Simplify right side
    177.19x = 18,340.53
  5. Step 5: Solve for x
    x = 18,340.53/177.19
  6. Step 6: Final answer
    x = 103.51

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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.