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Finding the Fourth Proportional to 825.93, 1,239.03 and 363.72

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Solution

The fourth proportional to 825.93, 1,239.03 and 363.72 is: 545.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    825.93 : 1,239.03 = 363.72 : x
  2. Step 2: Convert to fraction form
    825.93/1,239.03 = 363.72/x
  3. Step 3: Cross multiply
    825.93x = 1,239.03 × 363.72
  4. Step 4: Simplify right side
    825.93x = 450,659.99
  5. Step 5: Solve for x
    x = 450,659.99/825.93
  6. Step 6: Final answer
    x = 545.64

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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.