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Finding the Fourth Proportional to 675.96, 932.76 and 381.22

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Solution

The fourth proportional to 675.96, 932.76 and 381.22 is: 526.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.96 : 932.76 = 381.22 : x
  2. Step 2: Convert to fraction form
    675.96/932.76 = 381.22/x
  3. Step 3: Cross multiply
    675.96x = 932.76 × 381.22
  4. Step 4: Simplify right side
    675.96x = 355,586.77
  5. Step 5: Solve for x
    x = 355,586.77/675.96
  6. Step 6: Final answer
    x = 526.05

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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.