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Finding the Fourth Proportional to 675.38, 932.06 and 380.63

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Solution

The fourth proportional to 675.38, 932.06 and 380.63 is: 525.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.38 : 932.06 = 380.63 : x
  2. Step 2: Convert to fraction form
    675.38/932.06 = 380.63/x
  3. Step 3: Cross multiply
    675.38x = 932.06 × 380.63
  4. Step 4: Simplify right side
    675.38x = 354,770.00
  5. Step 5: Solve for x
    x = 354,770.00/675.38
  6. Step 6: Final answer
    x = 525.29

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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.