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Finding the Fourth Proportional to 486.15, 729.33 and 178.00

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Solution

The fourth proportional to 486.15, 729.33 and 178.00 is: 267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.15 : 729.33 = 178.00 : x
  2. Step 2: Convert to fraction form
    486.15/729.33 = 178.00/x
  3. Step 3: Cross multiply
    486.15x = 729.33 × 178.00
  4. Step 4: Simplify right side
    486.15x = 129,818.92
  5. Step 5: Solve for x
    x = 129,818.92/486.15
  6. Step 6: Final answer
    x = 267.03

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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.