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Finding the Fourth Proportional to 1,514, 2,087.70 and 1,198.75

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Solution

The fourth proportional to 1,514, 2,087.70 and 1,198.75 is: 1,652.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514 : 2,087.70 = 1,198.75 : x
  2. Step 2: Convert to fraction form
    1,514/2,087.70 = 1,198.75/x
  3. Step 3: Cross multiply
    1,514x = 2,087.70 × 1,198.75
  4. Step 4: Simplify right side
    1,514x = 2,502,630.38
  5. Step 5: Solve for x
    x = 2,502,630.38/1,514
  6. Step 6: Final answer
    x = 1,652.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.