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Finding the Fourth Proportional to 344.07, 515.70 and 220.51

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Solution

The fourth proportional to 344.07, 515.70 and 220.51 is: 330.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.07 : 515.70 = 220.51 : x
  2. Step 2: Convert to fraction form
    344.07/515.70 = 220.51/x
  3. Step 3: Cross multiply
    344.07x = 515.70 × 220.51
  4. Step 4: Simplify right side
    344.07x = 113,720.03
  5. Step 5: Solve for x
    x = 113,720.03/344.07
  6. Step 6: Final answer
    x = 330.51

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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.