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Finding the Fourth Proportional to 676.15, 932.99 and 381.38

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Solution

The fourth proportional to 676.15, 932.99 and 381.38 is: 526.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.15 : 932.99 = 381.38 : x
  2. Step 2: Convert to fraction form
    676.15/932.99 = 381.38/x
  3. Step 3: Cross multiply
    676.15x = 932.99 × 381.38
  4. Step 4: Simplify right side
    676.15x = 355,817.15
  5. Step 5: Solve for x
    x = 355,817.15/676.15
  6. Step 6: Final answer
    x = 526.24

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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.