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Finding the Fourth Proportional to 1,295.62, 1,943.45 and 321.73

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Solution

The fourth proportional to 1,295.62, 1,943.45 and 321.73 is: 482.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295.62 : 1,943.45 = 321.73 : x
  2. Step 2: Convert to fraction form
    1,295.62/1,943.45 = 321.73/x
  3. Step 3: Cross multiply
    1,295.62x = 1,943.45 × 321.73
  4. Step 4: Simplify right side
    1,295.62x = 625,256.45
  5. Step 5: Solve for x
    x = 625,256.45/1,295.62
  6. Step 6: Final answer
    x = 482.59

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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.