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Finding the Fourth Proportional to 822.04, 1,132.48 and 572.90

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Solution

The fourth proportional to 822.04, 1,132.48 and 572.90 is: 789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.04 : 1,132.48 = 572.90 : x
  2. Step 2: Convert to fraction form
    822.04/1,132.48 = 572.90/x
  3. Step 3: Cross multiply
    822.04x = 1,132.48 × 572.90
  4. Step 4: Simplify right side
    822.04x = 648,799.19
  5. Step 5: Solve for x
    x = 648,799.19/822.04
  6. Step 6: Final answer
    x = 789.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.