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Finding the Fourth Proportional to 822.04, 1,134.42 and 449.02

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Solution

The fourth proportional to 822.04, 1,134.42 and 449.02 is: 619.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.04 : 1,134.42 = 449.02 : x
  2. Step 2: Convert to fraction form
    822.04/1,134.42 = 449.02/x
  3. Step 3: Cross multiply
    822.04x = 1,134.42 × 449.02
  4. Step 4: Simplify right side
    822.04x = 509,377.27
  5. Step 5: Solve for x
    x = 509,377.27/822.04
  6. Step 6: Final answer
    x = 619.65

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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.