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Finding the Fourth Proportional to 617, 851.50 and 341

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Solution

The fourth proportional to 617, 851.50 and 341 is: 470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617 : 851.50 = 341 : x
  2. Step 2: Convert to fraction form
    617/851.50 = 341/x
  3. Step 3: Cross multiply
    617x = 851.50 × 341
  4. Step 4: Simplify right side
    617x = 290,361.50
  5. Step 5: Solve for x
    x = 290,361.50/617
  6. Step 6: Final answer
    x = 470.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.