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Finding the Fourth Proportional to 73.44, 101.34 and 45.78

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Solution

The fourth proportional to 73.44, 101.34 and 45.78 is: 63.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.44 : 101.34 = 45.78 : x
  2. Step 2: Convert to fraction form
    73.44/101.34 = 45.78/x
  3. Step 3: Cross multiply
    73.44x = 101.34 × 45.78
  4. Step 4: Simplify right side
    73.44x = 4,639.35
  5. Step 5: Solve for x
    x = 4,639.35/73.44
  6. Step 6: Final answer
    x = 63.17

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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.