Home / 1,020.65-1,531.19-371.36

Finding the Fourth Proportional to 1,020.65, 1,531.19 and 371.36

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Solution

The fourth proportional to 1,020.65, 1,531.19 and 371.36 is: 557.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.65 : 1,531.19 = 371.36 : x
  2. Step 2: Convert to fraction form
    1,020.65/1,531.19 = 371.36/x
  3. Step 3: Cross multiply
    1,020.65x = 1,531.19 × 371.36
  4. Step 4: Simplify right side
    1,020.65x = 568,627.47
  5. Step 5: Solve for x
    x = 568,627.47/1,020.65
  6. Step 6: Final answer
    x = 557.13

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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.