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Finding the Fourth Proportional to 215.19, 322.38 and 160.25

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Solution

The fourth proportional to 215.19, 322.38 and 160.25 is: 240.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.19 : 322.38 = 160.25 : x
  2. Step 2: Convert to fraction form
    215.19/322.38 = 160.25/x
  3. Step 3: Cross multiply
    215.19x = 322.38 × 160.25
  4. Step 4: Simplify right side
    215.19x = 51,659.78
  5. Step 5: Solve for x
    x = 51,659.78/215.19
  6. Step 6: Final answer
    x = 240.07

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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.