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Finding the Fourth Proportional to 236.12, 355.55 and 210.65

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Solution

The fourth proportional to 236.12, 355.55 and 210.65 is: 317.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.12 : 355.55 = 210.65 : x
  2. Step 2: Convert to fraction form
    236.12/355.55 = 210.65/x
  3. Step 3: Cross multiply
    236.12x = 355.55 × 210.65
  4. Step 4: Simplify right side
    236.12x = 74,893.78
  5. Step 5: Solve for x
    x = 74,893.78/236.12
  6. Step 6: Final answer
    x = 317.19

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.