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Finding the Fourth Proportional to 66.70, 92.03 and 44.87

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Solution

The fourth proportional to 66.70, 92.03 and 44.87 is: 61.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66.70 : 92.03 = 44.87 : x
  2. Step 2: Convert to fraction form
    66.70/92.03 = 44.87/x
  3. Step 3: Cross multiply
    66.70x = 92.03 × 44.87
  4. Step 4: Simplify right side
    66.70x = 4,129.39
  5. Step 5: Solve for x
    x = 4,129.39/66.70
  6. Step 6: Final answer
    x = 61.91

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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.