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Finding the Fourth Proportional to 348.49, 520.69 and 336.38

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Solution

The fourth proportional to 348.49, 520.69 and 336.38 is: 502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.49 : 520.69 = 336.38 : x
  2. Step 2: Convert to fraction form
    348.49/520.69 = 336.38/x
  3. Step 3: Cross multiply
    348.49x = 520.69 × 336.38
  4. Step 4: Simplify right side
    348.49x = 175,149.70
  5. Step 5: Solve for x
    x = 175,149.70/348.49
  6. Step 6: Final answer
    x = 502.60

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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.