Home / 1,021.17-1,531.97-534.09

Finding the Fourth Proportional to 1,021.17, 1,531.97 and 534.09

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Solution

The fourth proportional to 1,021.17, 1,531.97 and 534.09 is: 801.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.17 : 1,531.97 = 534.09 : x
  2. Step 2: Convert to fraction form
    1,021.17/1,531.97 = 534.09/x
  3. Step 3: Cross multiply
    1,021.17x = 1,531.97 × 534.09
  4. Step 4: Simplify right side
    1,021.17x = 818,209.86
  5. Step 5: Solve for x
    x = 818,209.86/1,021.17
  6. Step 6: Final answer
    x = 801.25

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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.