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Finding the Fourth Proportional to 73.87, 101.83 and 65.66

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Solution

The fourth proportional to 73.87, 101.83 and 65.66 is: 90.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.87 : 101.83 = 65.66 : x
  2. Step 2: Convert to fraction form
    73.87/101.83 = 65.66/x
  3. Step 3: Cross multiply
    73.87x = 101.83 × 65.66
  4. Step 4: Simplify right side
    73.87x = 6,686.16
  5. Step 5: Solve for x
    x = 6,686.16/73.87
  6. Step 6: Final answer
    x = 90.51

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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.