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Finding the Fourth Proportional to 597.12, 824.32 and 449.80

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Solution

The fourth proportional to 597.12, 824.32 and 449.80 is: 620.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    597.12 : 824.32 = 449.80 : x
  2. Step 2: Convert to fraction form
    597.12/824.32 = 449.80/x
  3. Step 3: Cross multiply
    597.12x = 824.32 × 449.80
  4. Step 4: Simplify right side
    597.12x = 370,779.14
  5. Step 5: Solve for x
    x = 370,779.14/597.12
  6. Step 6: Final answer
    x = 620.95

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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.