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Finding the Fourth Proportional to 99.48, 148.35 and 95.43

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Solution

The fourth proportional to 99.48, 148.35 and 95.43 is: 142.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.48 : 148.35 = 95.43 : x
  2. Step 2: Convert to fraction form
    99.48/148.35 = 95.43/x
  3. Step 3: Cross multiply
    99.48x = 148.35 × 95.43
  4. Step 4: Simplify right side
    99.48x = 14,157.04
  5. Step 5: Solve for x
    x = 14,157.04/99.48
  6. Step 6: Final answer
    x = 142.31

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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.