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Finding the Fourth Proportional to 371.71, 553.71 and 351.19

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Solution

The fourth proportional to 371.71, 553.71 and 351.19 is: 523.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.71 : 553.71 = 351.19 : x
  2. Step 2: Convert to fraction form
    371.71/553.71 = 351.19/x
  3. Step 3: Cross multiply
    371.71x = 553.71 × 351.19
  4. Step 4: Simplify right side
    371.71x = 194,457.41
  5. Step 5: Solve for x
    x = 194,457.41/371.71
  6. Step 6: Final answer
    x = 523.14

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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.