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Finding the Fourth Proportional to 1,257.23, 1,885.68 and 332.73

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Solution

The fourth proportional to 1,257.23, 1,885.68 and 332.73 is: 499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.23 : 1,885.68 = 332.73 : x
  2. Step 2: Convert to fraction form
    1,257.23/1,885.68 = 332.73/x
  3. Step 3: Cross multiply
    1,257.23x = 1,885.68 × 332.73
  4. Step 4: Simplify right side
    1,257.23x = 627,422.31
  5. Step 5: Solve for x
    x = 627,422.31/1,257.23
  6. Step 6: Final answer
    x = 499.05

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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.