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Finding the Fourth Proportional to 832.96, 1,247.10 and 539.73

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Solution

The fourth proportional to 832.96, 1,247.10 and 539.73 is: 808.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.96 : 1,247.10 = 539.73 : x
  2. Step 2: Convert to fraction form
    832.96/1,247.10 = 539.73/x
  3. Step 3: Cross multiply
    832.96x = 1,247.10 × 539.73
  4. Step 4: Simplify right side
    832.96x = 673,097.28
  5. Step 5: Solve for x
    x = 673,097.28/832.96
  6. Step 6: Final answer
    x = 808.08

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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.