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Finding the Fourth Proportional to 99.66, 148.44 and 94.41

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Solution

The fourth proportional to 99.66, 148.44 and 94.41 is: 140.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.66 : 148.44 = 94.41 : x
  2. Step 2: Convert to fraction form
    99.66/148.44 = 94.41/x
  3. Step 3: Cross multiply
    99.66x = 148.44 × 94.41
  4. Step 4: Simplify right side
    99.66x = 14,014.22
  5. Step 5: Solve for x
    x = 14,014.22/99.66
  6. Step 6: Final answer
    x = 140.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.