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Finding the Fourth Proportional to 375.43, 558.13 and 349.51

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Solution

The fourth proportional to 375.43, 558.13 and 349.51 is: 519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.43 : 558.13 = 349.51 : x
  2. Step 2: Convert to fraction form
    375.43/558.13 = 349.51/x
  3. Step 3: Cross multiply
    375.43x = 558.13 × 349.51
  4. Step 4: Simplify right side
    375.43x = 195,072.89
  5. Step 5: Solve for x
    x = 195,072.89/375.43
  6. Step 6: Final answer
    x = 519.60

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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.