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Finding the Fourth Proportional to 798.48, 1,195.50 and 432.44

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Solution

The fourth proportional to 798.48, 1,195.50 and 432.44 is: 647.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    798.48 : 1,195.50 = 432.44 : x
  2. Step 2: Convert to fraction form
    798.48/1,195.50 = 432.44/x
  3. Step 3: Cross multiply
    798.48x = 1,195.50 × 432.44
  4. Step 4: Simplify right side
    798.48x = 516,982.02
  5. Step 5: Solve for x
    x = 516,982.02/798.48
  6. Step 6: Final answer
    x = 647.46

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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.