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Finding the Fourth Proportional to 94.41, 130.22 and 87.51

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Solution

The fourth proportional to 94.41, 130.22 and 87.51 is: 120.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.41 : 130.22 = 87.51 : x
  2. Step 2: Convert to fraction form
    94.41/130.22 = 87.51/x
  3. Step 3: Cross multiply
    94.41x = 130.22 × 87.51
  4. Step 4: Simplify right side
    94.41x = 11,395.11
  5. Step 5: Solve for x
    x = 11,395.11/94.41
  6. Step 6: Final answer
    x = 120.70

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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.