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Finding the Fourth Proportional to 675.57, 932.39 and 380.77

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Solution

The fourth proportional to 675.57, 932.39 and 380.77 is: 525.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.57 : 932.39 = 380.77 : x
  2. Step 2: Convert to fraction form
    675.57/932.39 = 380.77/x
  3. Step 3: Cross multiply
    675.57x = 932.39 × 380.77
  4. Step 4: Simplify right side
    675.57x = 355,026.14
  5. Step 5: Solve for x
    x = 355,026.14/675.57
  6. Step 6: Final answer
    x = 525.52

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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.