Home / 1,020.85-1,531.67-371.63

Finding the Fourth Proportional to 1,020.85, 1,531.67 and 371.63

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Solution

The fourth proportional to 1,020.85, 1,531.67 and 371.63 is: 557.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.85 : 1,531.67 = 371.63 : x
  2. Step 2: Convert to fraction form
    1,020.85/1,531.67 = 371.63/x
  3. Step 3: Cross multiply
    1,020.85x = 1,531.67 × 371.63
  4. Step 4: Simplify right side
    1,020.85x = 569,214.52
  5. Step 5: Solve for x
    x = 569,214.52/1,020.85
  6. Step 6: Final answer
    x = 557.59

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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.