Home / 1,020.64-1,531.06-371.36

Finding the Fourth Proportional to 1,020.64, 1,531.06 and 371.36

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Solution

The fourth proportional to 1,020.64, 1,531.06 and 371.36 is: 557.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.64 : 1,531.06 = 371.36 : x
  2. Step 2: Convert to fraction form
    1,020.64/1,531.06 = 371.36/x
  3. Step 3: Cross multiply
    1,020.64x = 1,531.06 × 371.36
  4. Step 4: Simplify right side
    1,020.64x = 568,574.44
  5. Step 5: Solve for x
    x = 568,574.44/1,020.64
  6. Step 6: Final answer
    x = 557.08

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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.