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Finding the Fourth Proportional to 344.78, 515.95 and 235.10

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Solution

The fourth proportional to 344.78, 515.95 and 235.10 is: 351.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.78 : 515.95 = 235.10 : x
  2. Step 2: Convert to fraction form
    344.78/515.95 = 235.10/x
  3. Step 3: Cross multiply
    344.78x = 515.95 × 235.10
  4. Step 4: Simplify right side
    344.78x = 121,300.55
  5. Step 5: Solve for x
    x = 121,300.55/344.78
  6. Step 6: Final answer
    x = 351.83

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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.