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Finding the Fourth Proportional to 836.24, 1,152.56 and 723.98

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Solution

The fourth proportional to 836.24, 1,152.56 and 723.98 is: 997.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.24 : 1,152.56 = 723.98 : x
  2. Step 2: Convert to fraction form
    836.24/1,152.56 = 723.98/x
  3. Step 3: Cross multiply
    836.24x = 1,152.56 × 723.98
  4. Step 4: Simplify right side
    836.24x = 834,421.01
  5. Step 5: Solve for x
    x = 834,421.01/836.24
  6. Step 6: Final answer
    x = 997.83

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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.