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Finding the Fourth Proportional to 73.55, 110.25 and 70.82

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Solution

The fourth proportional to 73.55, 110.25 and 70.82 is: 106.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.55 : 110.25 = 70.82 : x
  2. Step 2: Convert to fraction form
    73.55/110.25 = 70.82/x
  3. Step 3: Cross multiply
    73.55x = 110.25 × 70.82
  4. Step 4: Simplify right side
    73.55x = 7,807.91
  5. Step 5: Solve for x
    x = 7,807.91/73.55
  6. Step 6: Final answer
    x = 106.16

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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.