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Finding the Fourth Proportional to 843.99, 1,263.24 and 727.35

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Solution

The fourth proportional to 843.99, 1,263.24 and 727.35 is: 1,088.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.99 : 1,263.24 = 727.35 : x
  2. Step 2: Convert to fraction form
    843.99/1,263.24 = 727.35/x
  3. Step 3: Cross multiply
    843.99x = 1,263.24 × 727.35
  4. Step 4: Simplify right side
    843.99x = 918,817.61
  5. Step 5: Solve for x
    x = 918,817.61/843.99
  6. Step 6: Final answer
    x = 1,088.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.