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Finding the Fourth Proportional to 347.67, 521.45 and 330.36

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Solution

The fourth proportional to 347.67, 521.45 and 330.36 is: 495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.67 : 521.45 = 330.36 : x
  2. Step 2: Convert to fraction form
    347.67/521.45 = 330.36/x
  3. Step 3: Cross multiply
    347.67x = 521.45 × 330.36
  4. Step 4: Simplify right side
    347.67x = 172,264.57
  5. Step 5: Solve for x
    x = 172,264.57/347.67
  6. Step 6: Final answer
    x = 495.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.