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Finding the Fourth Proportional to 94.89, 143.05 and 88.62

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Solution

The fourth proportional to 94.89, 143.05 and 88.62 is: 133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.89 : 143.05 = 88.62 : x
  2. Step 2: Convert to fraction form
    94.89/143.05 = 88.62/x
  3. Step 3: Cross multiply
    94.89x = 143.05 × 88.62
  4. Step 4: Simplify right side
    94.89x = 12,677.74
  5. Step 5: Solve for x
    x = 12,677.74/94.89
  6. Step 6: Final answer
    x = 133.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.