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Finding the Fourth Proportional to 496.59, 685.22 and 283.89

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Solution

The fourth proportional to 496.59, 685.22 and 283.89 is: 391.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.59 : 685.22 = 283.89 : x
  2. Step 2: Convert to fraction form
    496.59/685.22 = 283.89/x
  3. Step 3: Cross multiply
    496.59x = 685.22 × 283.89
  4. Step 4: Simplify right side
    496.59x = 194,527.11
  5. Step 5: Solve for x
    x = 194,527.11/496.59
  6. Step 6: Final answer
    x = 391.73

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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.