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Finding the Fourth Proportional to 215.73, 322.95 and 134.32

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Solution

The fourth proportional to 215.73, 322.95 and 134.32 is: 201.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.73 : 322.95 = 134.32 : x
  2. Step 2: Convert to fraction form
    215.73/322.95 = 134.32/x
  3. Step 3: Cross multiply
    215.73x = 322.95 × 134.32
  4. Step 4: Simplify right side
    215.73x = 43,378.64
  5. Step 5: Solve for x
    x = 43,378.64/215.73
  6. Step 6: Final answer
    x = 201.08

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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.