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Finding the Fourth Proportional to 214.34, 320.61 and 168.14

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Solution

The fourth proportional to 214.34, 320.61 and 168.14 is: 251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.34 : 320.61 = 168.14 : x
  2. Step 2: Convert to fraction form
    214.34/320.61 = 168.14/x
  3. Step 3: Cross multiply
    214.34x = 320.61 × 168.14
  4. Step 4: Simplify right side
    214.34x = 53,907.37
  5. Step 5: Solve for x
    x = 53,907.37/214.34
  6. Step 6: Final answer
    x = 251.50

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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.