Home / 1,020.26-1,528.45-581.81

Finding the Fourth Proportional to 1,020.26, 1,528.45 and 581.81

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Solution

The fourth proportional to 1,020.26, 1,528.45 and 581.81 is: 871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.26 : 1,528.45 = 581.81 : x
  2. Step 2: Convert to fraction form
    1,020.26/1,528.45 = 581.81/x
  3. Step 3: Cross multiply
    1,020.26x = 1,528.45 × 581.81
  4. Step 4: Simplify right side
    1,020.26x = 889,264.59
  5. Step 5: Solve for x
    x = 889,264.59/1,020.26
  6. Step 6: Final answer
    x = 871.61

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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.