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Finding the Fourth Proportional to 561.32, 836.39 and 499.97

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Solution

The fourth proportional to 561.32, 836.39 and 499.97 is: 744.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.32 : 836.39 = 499.97 : x
  2. Step 2: Convert to fraction form
    561.32/836.39 = 499.97/x
  3. Step 3: Cross multiply
    561.32x = 836.39 × 499.97
  4. Step 4: Simplify right side
    561.32x = 418,169.91
  5. Step 5: Solve for x
    x = 418,169.91/561.32
  6. Step 6: Final answer
    x = 744.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.