Home / 1,021.01-1,531.52-371.80

Finding the Fourth Proportional to 1,021.01, 1,531.52 and 371.80

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Solution

The fourth proportional to 1,021.01, 1,531.52 and 371.80 is: 557.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.01 : 1,531.52 = 371.80 : x
  2. Step 2: Convert to fraction form
    1,021.01/1,531.52 = 371.80/x
  3. Step 3: Cross multiply
    1,021.01x = 1,531.52 × 371.80
  4. Step 4: Simplify right side
    1,021.01x = 569,419.14
  5. Step 5: Solve for x
    x = 569,419.14/1,021.01
  6. Step 6: Final answer
    x = 557.70

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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.