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Finding the Fourth Proportional to 215.16, 322.29 and 182.81

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Solution

The fourth proportional to 215.16, 322.29 and 182.81 is: 273.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.16 : 322.29 = 182.81 : x
  2. Step 2: Convert to fraction form
    215.16/322.29 = 182.81/x
  3. Step 3: Cross multiply
    215.16x = 322.29 × 182.81
  4. Step 4: Simplify right side
    215.16x = 58,916.22
  5. Step 5: Solve for x
    x = 58,916.22/215.16
  6. Step 6: Final answer
    x = 273.83

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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.