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Finding the Fourth Proportional to 1,534.50, 2,302.11 and 494.60

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Solution

The fourth proportional to 1,534.50, 2,302.11 and 494.60 is: 742.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.50 : 2,302.11 = 494.60 : x
  2. Step 2: Convert to fraction form
    1,534.50/2,302.11 = 494.60/x
  3. Step 3: Cross multiply
    1,534.50x = 2,302.11 × 494.60
  4. Step 4: Simplify right side
    1,534.50x = 1,138,623.61
  5. Step 5: Solve for x
    x = 1,138,623.61/1,534.50
  6. Step 6: Final answer
    x = 742.02

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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.