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Finding the Fourth Proportional to 836.58, 1,248.27 and 771.96

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Solution

The fourth proportional to 836.58, 1,248.27 and 771.96 is: 1,151.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.58 : 1,248.27 = 771.96 : x
  2. Step 2: Convert to fraction form
    836.58/1,248.27 = 771.96/x
  3. Step 3: Cross multiply
    836.58x = 1,248.27 × 771.96
  4. Step 4: Simplify right side
    836.58x = 963,614.51
  5. Step 5: Solve for x
    x = 963,614.51/836.58
  6. Step 6: Final answer
    x = 1,151.85

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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.