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Finding the Fourth Proportional to 824.28, 1,136.98 and 575.51

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Solution

The fourth proportional to 824.28, 1,136.98 and 575.51 is: 793.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.28 : 1,136.98 = 575.51 : x
  2. Step 2: Convert to fraction form
    824.28/1,136.98 = 575.51/x
  3. Step 3: Cross multiply
    824.28x = 1,136.98 × 575.51
  4. Step 4: Simplify right side
    824.28x = 654,337.67
  5. Step 5: Solve for x
    x = 654,337.67/824.28
  6. Step 6: Final answer
    x = 793.83

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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.