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Finding the Fourth Proportional to 99.80, 150.43 and 95.68

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Solution

The fourth proportional to 99.80, 150.43 and 95.68 is: 144.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.80 : 150.43 = 95.68 : x
  2. Step 2: Convert to fraction form
    99.80/150.43 = 95.68/x
  3. Step 3: Cross multiply
    99.80x = 150.43 × 95.68
  4. Step 4: Simplify right side
    99.80x = 14,393.14
  5. Step 5: Solve for x
    x = 14,393.14/99.80
  6. Step 6: Final answer
    x = 144.22

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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.