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Finding the Fourth Proportional to 674.84, 931.30 and 376.11

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Solution

The fourth proportional to 674.84, 931.30 and 376.11 is: 519.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.84 : 931.30 = 376.11 : x
  2. Step 2: Convert to fraction form
    674.84/931.30 = 376.11/x
  3. Step 3: Cross multiply
    674.84x = 931.30 × 376.11
  4. Step 4: Simplify right side
    674.84x = 350,270.30
  5. Step 5: Solve for x
    x = 350,270.30/674.84
  6. Step 6: Final answer
    x = 519.04

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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.