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Finding the Fourth Proportional to 98.41, 147.61 and 57.34

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Solution

The fourth proportional to 98.41, 147.61 and 57.34 is: 86.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.41 : 147.61 = 57.34 : x
  2. Step 2: Convert to fraction form
    98.41/147.61 = 57.34/x
  3. Step 3: Cross multiply
    98.41x = 147.61 × 57.34
  4. Step 4: Simplify right side
    98.41x = 8,463.96
  5. Step 5: Solve for x
    x = 8,463.96/98.41
  6. Step 6: Final answer
    x = 86.01

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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.