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Finding the Fourth Proportional to 1,677.26, 2,516.20 and 752.84

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Solution

The fourth proportional to 1,677.26, 2,516.20 and 752.84 is: 1,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,677.26 : 2,516.20 = 752.84 : x
  2. Step 2: Convert to fraction form
    1,677.26/2,516.20 = 752.84/x
  3. Step 3: Cross multiply
    1,677.26x = 2,516.20 × 752.84
  4. Step 4: Simplify right side
    1,677.26x = 1,894,296.01
  5. Step 5: Solve for x
    x = 1,894,296.01/1,677.26
  6. Step 6: Final answer
    x = 1,129.40

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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.