Home / 1,515.31-2,273.10-649.42

Finding the Fourth Proportional to 1,515.31, 2,273.10 and 649.42

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Solution

The fourth proportional to 1,515.31, 2,273.10 and 649.42 is: 974.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.31 : 2,273.10 = 649.42 : x
  2. Step 2: Convert to fraction form
    1,515.31/2,273.10 = 649.42/x
  3. Step 3: Cross multiply
    1,515.31x = 2,273.10 × 649.42
  4. Step 4: Simplify right side
    1,515.31x = 1,476,196.60
  5. Step 5: Solve for x
    x = 1,476,196.60/1,515.31
  6. Step 6: Final answer
    x = 974.19

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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.