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Finding the Fourth Proportional to 215.16, 322.59 and 93.27

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Solution

The fourth proportional to 215.16, 322.59 and 93.27 is: 139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.16 : 322.59 = 93.27 : x
  2. Step 2: Convert to fraction form
    215.16/322.59 = 93.27/x
  3. Step 3: Cross multiply
    215.16x = 322.59 × 93.27
  4. Step 4: Simplify right side
    215.16x = 30,087.97
  5. Step 5: Solve for x
    x = 30,087.97/215.16
  6. Step 6: Final answer
    x = 139.84

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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.