Home / 1,514.16-2,270.88-418.40

Finding the Fourth Proportional to 1,514.16, 2,270.88 and 418.40

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Solution

The fourth proportional to 1,514.16, 2,270.88 and 418.40 is: 627.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514.16 : 2,270.88 = 418.40 : x
  2. Step 2: Convert to fraction form
    1,514.16/2,270.88 = 418.40/x
  3. Step 3: Cross multiply
    1,514.16x = 2,270.88 × 418.40
  4. Step 4: Simplify right side
    1,514.16x = 950,136.19
  5. Step 5: Solve for x
    x = 950,136.19/1,514.16
  6. Step 6: Final answer
    x = 627.50

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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.