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Finding the Fourth Proportional to 1,009.26, 1,514.14 and 424.31

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Solution

The fourth proportional to 1,009.26, 1,514.14 and 424.31 is: 636.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.26 : 1,514.14 = 424.31 : x
  2. Step 2: Convert to fraction form
    1,009.26/1,514.14 = 424.31/x
  3. Step 3: Cross multiply
    1,009.26x = 1,514.14 × 424.31
  4. Step 4: Simplify right side
    1,009.26x = 642,456.11
  5. Step 5: Solve for x
    x = 642,456.11/1,009.26
  6. Step 6: Final answer
    x = 636.56

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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.