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Finding the Fourth Proportional to 482.98, 724.48 and 194.42

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Solution

The fourth proportional to 482.98, 724.48 and 194.42 is: 291.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.98 : 724.48 = 194.42 : x
  2. Step 2: Convert to fraction form
    482.98/724.48 = 194.42/x
  3. Step 3: Cross multiply
    482.98x = 724.48 × 194.42
  4. Step 4: Simplify right side
    482.98x = 140,853.40
  5. Step 5: Solve for x
    x = 140,853.40/482.98
  6. Step 6: Final answer
    x = 291.63

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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.