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Finding the Fourth Proportional to 79.74, 119.25 and 62.55

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Solution

The fourth proportional to 79.74, 119.25 and 62.55 is: 93.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.74 : 119.25 = 62.55 : x
  2. Step 2: Convert to fraction form
    79.74/119.25 = 62.55/x
  3. Step 3: Cross multiply
    79.74x = 119.25 × 62.55
  4. Step 4: Simplify right side
    79.74x = 7,459.09
  5. Step 5: Solve for x
    x = 7,459.09/79.74
  6. Step 6: Final answer
    x = 93.54

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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.