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Finding the Fourth Proportional to 370.43, 551.76 and 351.71

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Solution

The fourth proportional to 370.43, 551.76 and 351.71 is: 523.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.43 : 551.76 = 351.71 : x
  2. Step 2: Convert to fraction form
    370.43/551.76 = 351.71/x
  3. Step 3: Cross multiply
    370.43x = 551.76 × 351.71
  4. Step 4: Simplify right side
    370.43x = 194,059.51
  5. Step 5: Solve for x
    x = 194,059.51/370.43
  6. Step 6: Final answer
    x = 523.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.