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Finding the Fourth Proportional to 73.02, 109.43 and 62.80

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Solution

The fourth proportional to 73.02, 109.43 and 62.80 is: 94.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.02 : 109.43 = 62.80 : x
  2. Step 2: Convert to fraction form
    73.02/109.43 = 62.80/x
  3. Step 3: Cross multiply
    73.02x = 109.43 × 62.80
  4. Step 4: Simplify right side
    73.02x = 6,872.64
  5. Step 5: Solve for x
    x = 6,872.64/73.02
  6. Step 6: Final answer
    x = 94.12

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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.