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Finding the Fourth Proportional to 347.06, 520.79 and 239.33

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Solution

The fourth proportional to 347.06, 520.79 and 239.33 is: 359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.06 : 520.79 = 239.33 : x
  2. Step 2: Convert to fraction form
    347.06/520.79 = 239.33/x
  3. Step 3: Cross multiply
    347.06x = 520.79 × 239.33
  4. Step 4: Simplify right side
    347.06x = 124,642.57
  5. Step 5: Solve for x
    x = 124,642.57/347.06
  6. Step 6: Final answer
    x = 359.14

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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.