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Finding the Fourth Proportional to 114.88, 158.47 and 98.55

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Solution

The fourth proportional to 114.88, 158.47 and 98.55 is: 135.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.88 : 158.47 = 98.55 : x
  2. Step 2: Convert to fraction form
    114.88/158.47 = 98.55/x
  3. Step 3: Cross multiply
    114.88x = 158.47 × 98.55
  4. Step 4: Simplify right side
    114.88x = 15,617.22
  5. Step 5: Solve for x
    x = 15,617.22/114.88
  6. Step 6: Final answer
    x = 135.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.