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Finding the Fourth Proportional to 94.03, 129.74 and 63

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Solution

The fourth proportional to 94.03, 129.74 and 63 is: 86.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.03 : 129.74 = 63 : x
  2. Step 2: Convert to fraction form
    94.03/129.74 = 63/x
  3. Step 3: Cross multiply
    94.03x = 129.74 × 63
  4. Step 4: Simplify right side
    94.03x = 8,173.62
  5. Step 5: Solve for x
    x = 8,173.62/94.03
  6. Step 6: Final answer
    x = 86.93

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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.