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Finding the Fourth Proportional to 73.74, 101.88 and 68.34

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Solution

The fourth proportional to 73.74, 101.88 and 68.34 is: 94.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.74 : 101.88 = 68.34 : x
  2. Step 2: Convert to fraction form
    73.74/101.88 = 68.34/x
  3. Step 3: Cross multiply
    73.74x = 101.88 × 68.34
  4. Step 4: Simplify right side
    73.74x = 6,962.48
  5. Step 5: Solve for x
    x = 6,962.48/73.74
  6. Step 6: Final answer
    x = 94.42

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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.