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Finding the Fourth Proportional to 368.71, 549.31 and 351.29

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Solution

The fourth proportional to 368.71, 549.31 and 351.29 is: 523.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.71 : 549.31 = 351.29 : x
  2. Step 2: Convert to fraction form
    368.71/549.31 = 351.29/x
  3. Step 3: Cross multiply
    368.71x = 549.31 × 351.29
  4. Step 4: Simplify right side
    368.71x = 192,965.35
  5. Step 5: Solve for x
    x = 192,965.35/368.71
  6. Step 6: Final answer
    x = 523.36

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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.