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Finding the Fourth Proportional to 98.22, 146.45 and 92.01

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Solution

The fourth proportional to 98.22, 146.45 and 92.01 is: 137.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.22 : 146.45 = 92.01 : x
  2. Step 2: Convert to fraction form
    98.22/146.45 = 92.01/x
  3. Step 3: Cross multiply
    98.22x = 146.45 × 92.01
  4. Step 4: Simplify right side
    98.22x = 13,474.86
  5. Step 5: Solve for x
    x = 13,474.86/98.22
  6. Step 6: Final answer
    x = 137.19

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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.