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Finding the Fourth Proportional to 2,278.64, 3,417.98 and 635.31

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Solution

The fourth proportional to 2,278.64, 3,417.98 and 635.31 is: 952.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.64 : 3,417.98 = 635.31 : x
  2. Step 2: Convert to fraction form
    2,278.64/3,417.98 = 635.31/x
  3. Step 3: Cross multiply
    2,278.64x = 3,417.98 × 635.31
  4. Step 4: Simplify right side
    2,278.64x = 2,171,476.87
  5. Step 5: Solve for x
    x = 2,171,476.87/2,278.64
  6. Step 6: Final answer
    x = 952.97

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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.