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Finding the Fourth Proportional to 343.90, 515.72 and 241.23

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Solution

The fourth proportional to 343.90, 515.72 and 241.23 is: 361.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.90 : 515.72 = 241.23 : x
  2. Step 2: Convert to fraction form
    343.90/515.72 = 241.23/x
  3. Step 3: Cross multiply
    343.90x = 515.72 × 241.23
  4. Step 4: Simplify right side
    343.90x = 124,403.35
  5. Step 5: Solve for x
    x = 124,403.35/343.90
  6. Step 6: Final answer
    x = 361.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.