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Finding the Fourth Proportional to 99.43, 149.86 and 95.32

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Solution

The fourth proportional to 99.43, 149.86 and 95.32 is: 143.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.43 : 149.86 = 95.32 : x
  2. Step 2: Convert to fraction form
    99.43/149.86 = 95.32/x
  3. Step 3: Cross multiply
    99.43x = 149.86 × 95.32
  4. Step 4: Simplify right side
    99.43x = 14,284.66
  5. Step 5: Solve for x
    x = 14,284.66/99.43
  6. Step 6: Final answer
    x = 143.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.