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Finding the Fourth Proportional to 351.75, 485.19 and 233.55

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Solution

The fourth proportional to 351.75, 485.19 and 233.55 is: 322.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.75 : 485.19 = 233.55 : x
  2. Step 2: Convert to fraction form
    351.75/485.19 = 233.55/x
  3. Step 3: Cross multiply
    351.75x = 485.19 × 233.55
  4. Step 4: Simplify right side
    351.75x = 113,316.12
  5. Step 5: Solve for x
    x = 113,316.12/351.75
  6. Step 6: Final answer
    x = 322.15

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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.