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Finding the Fourth Proportional to 494.72, 742.05 and 170.06

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Solution

The fourth proportional to 494.72, 742.05 and 170.06 is: 255.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.72 : 742.05 = 170.06 : x
  2. Step 2: Convert to fraction form
    494.72/742.05 = 170.06/x
  3. Step 3: Cross multiply
    494.72x = 742.05 × 170.06
  4. Step 4: Simplify right side
    494.72x = 126,193.02
  5. Step 5: Solve for x
    x = 126,193.02/494.72
  6. Step 6: Final answer
    x = 255.08

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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.