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Finding the Fourth Proportional to 531.20, 733.23 and 448.73

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Solution

The fourth proportional to 531.20, 733.23 and 448.73 is: 619.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.20 : 733.23 = 448.73 : x
  2. Step 2: Convert to fraction form
    531.20/733.23 = 448.73/x
  3. Step 3: Cross multiply
    531.20x = 733.23 × 448.73
  4. Step 4: Simplify right side
    531.20x = 329,022.30
  5. Step 5: Solve for x
    x = 329,022.30/531.20
  6. Step 6: Final answer
    x = 619.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.