Home / 1,020.63-1,531.55-371.42

Finding the Fourth Proportional to 1,020.63, 1,531.55 and 371.42

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Solution

The fourth proportional to 1,020.63, 1,531.55 and 371.42 is: 557.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.63 : 1,531.55 = 371.42 : x
  2. Step 2: Convert to fraction form
    1,020.63/1,531.55 = 371.42/x
  3. Step 3: Cross multiply
    1,020.63x = 1,531.55 × 371.42
  4. Step 4: Simplify right side
    1,020.63x = 568,848.30
  5. Step 5: Solve for x
    x = 568,848.30/1,020.63
  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.