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Finding the Fourth Proportional to 1,078.48, 1,614.48 and 834.08

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Solution

The fourth proportional to 1,078.48, 1,614.48 and 834.08 is: 1,248.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,078.48 : 1,614.48 = 834.08 : x
  2. Step 2: Convert to fraction form
    1,078.48/1,614.48 = 834.08/x
  3. Step 3: Cross multiply
    1,078.48x = 1,614.48 × 834.08
  4. Step 4: Simplify right side
    1,078.48x = 1,346,605.48
  5. Step 5: Solve for x
    x = 1,346,605.48/1,078.48
  6. Step 6: Final answer
    x = 1,248.61

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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.