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Finding the Fourth Proportional to 1,514, 2,270.96 and 418.36

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Solution

The fourth proportional to 1,514, 2,270.96 and 418.36 is: 627.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514 : 2,270.96 = 418.36 : x
  2. Step 2: Convert to fraction form
    1,514/2,270.96 = 418.36/x
  3. Step 3: Cross multiply
    1,514x = 2,270.96 × 418.36
  4. Step 4: Simplify right side
    1,514x = 950,078.83
  5. Step 5: Solve for x
    x = 950,078.83/1,514
  6. Step 6: Final answer
    x = 627.53

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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.