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Finding the Fourth Proportional to 347.04, 517.47 and 342.79

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Solution

The fourth proportional to 347.04, 517.47 and 342.79 is: 511.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.04 : 517.47 = 342.79 : x
  2. Step 2: Convert to fraction form
    347.04/517.47 = 342.79/x
  3. Step 3: Cross multiply
    347.04x = 517.47 × 342.79
  4. Step 4: Simplify right side
    347.04x = 177,380.96
  5. Step 5: Solve for x
    x = 177,380.96/347.04
  6. Step 6: Final answer
    x = 511.13

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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.