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Finding the Fourth Proportional to 1,021.26, 1,532.49 and 372.05

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Solution

The fourth proportional to 1,021.26, 1,532.49 and 372.05 is: 558.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.26 : 1,532.49 = 372.05 : x
  2. Step 2: Convert to fraction form
    1,021.26/1,532.49 = 372.05/x
  3. Step 3: Cross multiply
    1,021.26x = 1,532.49 × 372.05
  4. Step 4: Simplify right side
    1,021.26x = 570,155.24
  5. Step 5: Solve for x
    x = 570,155.24/1,021.26
  6. Step 6: Final answer
    x = 558.29

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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.