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Finding the Fourth Proportional to 675.56, 932.40 and 380.96

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Solution

The fourth proportional to 675.56, 932.40 and 380.96 is: 525.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.56 : 932.40 = 380.96 : x
  2. Step 2: Convert to fraction form
    675.56/932.40 = 380.96/x
  3. Step 3: Cross multiply
    675.56x = 932.40 × 380.96
  4. Step 4: Simplify right side
    675.56x = 355,207.10
  5. Step 5: Solve for x
    x = 355,207.10/675.56
  6. Step 6: Final answer
    x = 525.80

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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.