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Finding the Fourth Proportional to 348.36, 518.43 and 335.40

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Solution

The fourth proportional to 348.36, 518.43 and 335.40 is: 499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.36 : 518.43 = 335.40 : x
  2. Step 2: Convert to fraction form
    348.36/518.43 = 335.40/x
  3. Step 3: Cross multiply
    348.36x = 518.43 × 335.40
  4. Step 4: Simplify right side
    348.36x = 173,881.42
  5. Step 5: Solve for x
    x = 173,881.42/348.36
  6. Step 6: Final answer
    x = 499.14

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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.