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Finding the Fourth Proportional to 836.64, 1,253.58 and 373.72

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Solution

The fourth proportional to 836.64, 1,253.58 and 373.72 is: 559.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.64 : 1,253.58 = 373.72 : x
  2. Step 2: Convert to fraction form
    836.64/1,253.58 = 373.72/x
  3. Step 3: Cross multiply
    836.64x = 1,253.58 × 373.72
  4. Step 4: Simplify right side
    836.64x = 468,487.92
  5. Step 5: Solve for x
    x = 468,487.92/836.64
  6. Step 6: Final answer
    x = 559.96

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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.