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Finding the Fourth Proportional to 98.56, 148.48 and 94.08

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Solution

The fourth proportional to 98.56, 148.48 and 94.08 is: 141.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98.56 : 148.48 = 94.08 : x
  2. Step 2: Convert to fraction form
    98.56/148.48 = 94.08/x
  3. Step 3: Cross multiply
    98.56x = 148.48 × 94.08
  4. Step 4: Simplify right side
    98.56x = 13,969.00
  5. Step 5: Solve for x
    x = 13,969.00/98.56
  6. Step 6: Final answer
    x = 141.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.