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Finding the Fourth Proportional to 94.18, 130.50 and 92.56

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Solution

The fourth proportional to 94.18, 130.50 and 92.56 is: 128.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.18 : 130.50 = 92.56 : x
  2. Step 2: Convert to fraction form
    94.18/130.50 = 92.56/x
  3. Step 3: Cross multiply
    94.18x = 130.50 × 92.56
  4. Step 4: Simplify right side
    94.18x = 12,079.08
  5. Step 5: Solve for x
    x = 12,079.08/94.18
  6. Step 6: Final answer
    x = 128.26

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.