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Finding the Fourth Proportional to 1,255.34, 1,731.30 and 882.20

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Solution

The fourth proportional to 1,255.34, 1,731.30 and 882.20 is: 1,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.34 : 1,731.30 = 882.20 : x
  2. Step 2: Convert to fraction form
    1,255.34/1,731.30 = 882.20/x
  3. Step 3: Cross multiply
    1,255.34x = 1,731.30 × 882.20
  4. Step 4: Simplify right side
    1,255.34x = 1,527,352.86
  5. Step 5: Solve for x
    x = 1,527,352.86/1,255.34
  6. Step 6: Final answer
    x = 1,216.68

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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.