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Finding the Fourth Proportional to 94.04, 129.75 and 54.68

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Solution

The fourth proportional to 94.04, 129.75 and 54.68 is: 75.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.04 : 129.75 = 54.68 : x
  2. Step 2: Convert to fraction form
    94.04/129.75 = 54.68/x
  3. Step 3: Cross multiply
    94.04x = 129.75 × 54.68
  4. Step 4: Simplify right side
    94.04x = 7,094.73
  5. Step 5: Solve for x
    x = 7,094.73/94.04
  6. Step 6: Final answer
    x = 75.44

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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.