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Finding the Fourth Proportional to 1,651.40, 2,475.48 and 827.18

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Solution

The fourth proportional to 1,651.40, 2,475.48 and 827.18 is: 1,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.40 : 2,475.48 = 827.18 : x
  2. Step 2: Convert to fraction form
    1,651.40/2,475.48 = 827.18/x
  3. Step 3: Cross multiply
    1,651.40x = 2,475.48 × 827.18
  4. Step 4: Simplify right side
    1,651.40x = 2,047,667.55
  5. Step 5: Solve for x
    x = 2,047,667.55/1,651.40
  6. Step 6: Final answer
    x = 1,239.96

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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.