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Finding the Fourth Proportional to 803.72, 1,203.96 and 494.71

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Solution

The fourth proportional to 803.72, 1,203.96 and 494.71 is: 741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.72 : 1,203.96 = 494.71 : x
  2. Step 2: Convert to fraction form
    803.72/1,203.96 = 494.71/x
  3. Step 3: Cross multiply
    803.72x = 1,203.96 × 494.71
  4. Step 4: Simplify right side
    803.72x = 595,609.90
  5. Step 5: Solve for x
    x = 595,609.90/803.72
  6. Step 6: Final answer
    x = 741.06

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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.