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Finding the Fourth Proportional to 836.37, 1,253.72 and 288.18

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Solution

The fourth proportional to 836.37, 1,253.72 and 288.18 is: 431.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.37 : 1,253.72 = 288.18 : x
  2. Step 2: Convert to fraction form
    836.37/1,253.72 = 288.18/x
  3. Step 3: Cross multiply
    836.37x = 1,253.72 × 288.18
  4. Step 4: Simplify right side
    836.37x = 361,295.59
  5. Step 5: Solve for x
    x = 361,295.59/836.37
  6. Step 6: Final answer
    x = 431.98

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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.