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Finding the Fourth Proportional to 98.06, 146.90 and 95.90

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Solution

The fourth proportional to 98.06, 146.90 and 95.90 is: 143.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.06 : 146.90 = 95.90 : x
  2. Step 2: Convert to fraction form
    98.06/146.90 = 95.90/x
  3. Step 3: Cross multiply
    98.06x = 146.90 × 95.90
  4. Step 4: Simplify right side
    98.06x = 14,087.71
  5. Step 5: Solve for x
    x = 14,087.71/98.06
  6. Step 6: Final answer
    x = 143.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.