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Finding the Fourth Proportional to 675.91, 932.68 and 381.18

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Solution

The fourth proportional to 675.91, 932.68 and 381.18 is: 525.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.91 : 932.68 = 381.18 : x
  2. Step 2: Convert to fraction form
    675.91/932.68 = 381.18/x
  3. Step 3: Cross multiply
    675.91x = 932.68 × 381.18
  4. Step 4: Simplify right side
    675.91x = 355,518.96
  5. Step 5: Solve for x
    x = 355,518.96/675.91
  6. Step 6: Final answer
    x = 525.99

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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.