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Finding the Fourth Proportional to 98.59, 147 and 97.39

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Solution

The fourth proportional to 98.59, 147 and 97.39 is: 145.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.59 : 147 = 97.39 : x
  2. Step 2: Convert to fraction form
    98.59/147 = 97.39/x
  3. Step 3: Cross multiply
    98.59x = 147 × 97.39
  4. Step 4: Simplify right side
    98.59x = 14,316.33
  5. Step 5: Solve for x
    x = 14,316.33/98.59
  6. Step 6: Final answer
    x = 145.21

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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.