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Finding the Fourth Proportional to 98.16, 146.36 and 96.96

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Solution

The fourth proportional to 98.16, 146.36 and 96.96 is: 144.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.16 : 146.36 = 96.96 : x
  2. Step 2: Convert to fraction form
    98.16/146.36 = 96.96/x
  3. Step 3: Cross multiply
    98.16x = 146.36 × 96.96
  4. Step 4: Simplify right side
    98.16x = 14,190.58
  5. Step 5: Solve for x
    x = 14,190.58/98.16
  6. Step 6: Final answer
    x = 144.57

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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.