Home / 1,020.69-1,531.08-371.07

Finding the Fourth Proportional to 1,020.69, 1,531.08 and 371.07

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Solution

The fourth proportional to 1,020.69, 1,531.08 and 371.07 is: 556.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.69 : 1,531.08 = 371.07 : x
  2. Step 2: Convert to fraction form
    1,020.69/1,531.08 = 371.07/x
  3. Step 3: Cross multiply
    1,020.69x = 1,531.08 × 371.07
  4. Step 4: Simplify right side
    1,020.69x = 568,137.86
  5. Step 5: Solve for x
    x = 568,137.86/1,020.69
  6. Step 6: Final answer
    x = 556.62

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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.