Home / 1,020.75-1,531.32-371.52

Finding the Fourth Proportional to 1,020.75, 1,531.32 and 371.52

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Solution

The fourth proportional to 1,020.75, 1,531.32 and 371.52 is: 557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.75 : 1,531.32 = 371.52 : x
  2. Step 2: Convert to fraction form
    1,020.75/1,531.32 = 371.52/x
  3. Step 3: Cross multiply
    1,020.75x = 1,531.32 × 371.52
  4. Step 4: Simplify right side
    1,020.75x = 568,916.01
  5. Step 5: Solve for x
    x = 568,916.01/1,020.75
  6. Step 6: Final answer
    x = 557.35

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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.