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Finding the Fourth Proportional to 73.96, 102.50 and 73.08

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Solution

The fourth proportional to 73.96, 102.50 and 73.08 is: 101.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.96 : 102.50 = 73.08 : x
  2. Step 2: Convert to fraction form
    73.96/102.50 = 73.08/x
  3. Step 3: Cross multiply
    73.96x = 102.50 × 73.08
  4. Step 4: Simplify right side
    73.96x = 7,490.70
  5. Step 5: Solve for x
    x = 7,490.70/73.96
  6. Step 6: Final answer
    x = 101.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.