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Finding the Fourth Proportional to 837.78, 1,253.40 and 562.56

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Solution

The fourth proportional to 837.78, 1,253.40 and 562.56 is: 841.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.78 : 1,253.40 = 562.56 : x
  2. Step 2: Convert to fraction form
    837.78/1,253.40 = 562.56/x
  3. Step 3: Cross multiply
    837.78x = 1,253.40 × 562.56
  4. Step 4: Simplify right side
    837.78x = 705,112.70
  5. Step 5: Solve for x
    x = 705,112.70/837.78
  6. Step 6: Final answer
    x = 841.64

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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.