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Finding the Fourth Proportional to 582.11, 803.21 and 357.97

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Solution

The fourth proportional to 582.11, 803.21 and 357.97 is: 493.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.11 : 803.21 = 357.97 : x
  2. Step 2: Convert to fraction form
    582.11/803.21 = 357.97/x
  3. Step 3: Cross multiply
    582.11x = 803.21 × 357.97
  4. Step 4: Simplify right side
    582.11x = 287,524.81
  5. Step 5: Solve for x
    x = 287,524.81/582.11
  6. Step 6: Final answer
    x = 493.94

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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.