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Finding the Fourth Proportional to 347.10, 517.94 and 338.87

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Solution

The fourth proportional to 347.10, 517.94 and 338.87 is: 505.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.10 : 517.94 = 338.87 : x
  2. Step 2: Convert to fraction form
    347.10/517.94 = 338.87/x
  3. Step 3: Cross multiply
    347.10x = 517.94 × 338.87
  4. Step 4: Simplify right side
    347.10x = 175,510.04
  5. Step 5: Solve for x
    x = 175,510.04/347.10
  6. Step 6: Final answer
    x = 505.65

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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.