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Finding the Fourth Proportional to 214.88, 322.32 and 158.24

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Solution

The fourth proportional to 214.88, 322.32 and 158.24 is: 237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.88 : 322.32 = 158.24 : x
  2. Step 2: Convert to fraction form
    214.88/322.32 = 158.24/x
  3. Step 3: Cross multiply
    214.88x = 322.32 × 158.24
  4. Step 4: Simplify right side
    214.88x = 51,003.92
  5. Step 5: Solve for x
    x = 51,003.92/214.88
  6. Step 6: Final answer
    x = 237.36

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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.