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Finding the Fourth Proportional to 98.30, 146.44 and 95.46

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Solution

The fourth proportional to 98.30, 146.44 and 95.46 is: 142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.30 : 146.44 = 95.46 : x
  2. Step 2: Convert to fraction form
    98.30/146.44 = 95.46/x
  3. Step 3: Cross multiply
    98.30x = 146.44 × 95.46
  4. Step 4: Simplify right side
    98.30x = 13,979.16
  5. Step 5: Solve for x
    x = 13,979.16/98.30
  6. Step 6: Final answer
    x = 142.21

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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.