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Finding the Fourth Proportional to 321.88, 482.89 and 93.88

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Solution

The fourth proportional to 321.88, 482.89 and 93.88 is: 140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.88 : 482.89 = 93.88 : x
  2. Step 2: Convert to fraction form
    321.88/482.89 = 93.88/x
  3. Step 3: Cross multiply
    321.88x = 482.89 × 93.88
  4. Step 4: Simplify right side
    321.88x = 45,333.71
  5. Step 5: Solve for x
    x = 45,333.71/321.88
  6. Step 6: Final answer
    x = 140.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.