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Finding the Fourth Proportional to 486.67, 730.37 and 178.81

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Solution

The fourth proportional to 486.67, 730.37 and 178.81 is: 268.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.67 : 730.37 = 178.81 : x
  2. Step 2: Convert to fraction form
    486.67/730.37 = 178.81/x
  3. Step 3: Cross multiply
    486.67x = 730.37 × 178.81
  4. Step 4: Simplify right side
    486.67x = 130,592.91
  5. Step 5: Solve for x
    x = 130,592.91/486.67
  6. Step 6: Final answer
    x = 268.34

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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.