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Finding the Fourth Proportional to 73.97, 110.64 and 53.45

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Solution

The fourth proportional to 73.97, 110.64 and 53.45 is: 79.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.97 : 110.64 = 53.45 : x
  2. Step 2: Convert to fraction form
    73.97/110.64 = 53.45/x
  3. Step 3: Cross multiply
    73.97x = 110.64 × 53.45
  4. Step 4: Simplify right side
    73.97x = 5,913.71
  5. Step 5: Solve for x
    x = 5,913.71/73.97
  6. Step 6: Final answer
    x = 79.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.