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Finding the Fourth Proportional to 582.39, 803.34 and 449.64

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Solution

The fourth proportional to 582.39, 803.34 and 449.64 is: 620.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.39 : 803.34 = 449.64 : x
  2. Step 2: Convert to fraction form
    582.39/803.34 = 449.64/x
  3. Step 3: Cross multiply
    582.39x = 803.34 × 449.64
  4. Step 4: Simplify right side
    582.39x = 361,213.80
  5. Step 5: Solve for x
    x = 361,213.80/582.39
  6. Step 6: Final answer
    x = 620.23

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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.