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Finding the Fourth Proportional to 235.09, 351.01 and 220.51

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Solution

The fourth proportional to 235.09, 351.01 and 220.51 is: 329.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.09 : 351.01 = 220.51 : x
  2. Step 2: Convert to fraction form
    235.09/351.01 = 220.51/x
  3. Step 3: Cross multiply
    235.09x = 351.01 × 220.51
  4. Step 4: Simplify right side
    235.09x = 77,400.11
  5. Step 5: Solve for x
    x = 77,400.11/235.09
  6. Step 6: Final answer
    x = 329.24

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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.