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Finding the Fourth Proportional to 347.93, 518.78 and 341.78

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Solution

The fourth proportional to 347.93, 518.78 and 341.78 is: 509.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.93 : 518.78 = 341.78 : x
  2. Step 2: Convert to fraction form
    347.93/518.78 = 341.78/x
  3. Step 3: Cross multiply
    347.93x = 518.78 × 341.78
  4. Step 4: Simplify right side
    347.93x = 177,308.63
  5. Step 5: Solve for x
    x = 177,308.63/347.93
  6. Step 6: Final answer
    x = 509.61

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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.