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Finding the Fourth Proportional to 1,021.92, 1,533.29 and 372.71

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Solution

The fourth proportional to 1,021.92, 1,533.29 and 372.71 is: 559.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.92 : 1,533.29 = 372.71 : x
  2. Step 2: Convert to fraction form
    1,021.92/1,533.29 = 372.71/x
  3. Step 3: Cross multiply
    1,021.92x = 1,533.29 × 372.71
  4. Step 4: Simplify right side
    1,021.92x = 571,472.52
  5. Step 5: Solve for x
    x = 571,472.52/1,021.92
  6. Step 6: Final answer
    x = 559.21

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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.