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Finding the Fourth Proportional to 73.55, 101.38 and 57.16

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Solution

The fourth proportional to 73.55, 101.38 and 57.16 is: 78.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.55 : 101.38 = 57.16 : x
  2. Step 2: Convert to fraction form
    73.55/101.38 = 57.16/x
  3. Step 3: Cross multiply
    73.55x = 101.38 × 57.16
  4. Step 4: Simplify right side
    73.55x = 5,794.09
  5. Step 5: Solve for x
    x = 5,794.09/73.55
  6. Step 6: Final answer
    x = 78.78

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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.