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Finding the Fourth Proportional to 486.32, 729.48 and 377.80

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Solution

The fourth proportional to 486.32, 729.48 and 377.80 is: 566.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.32 : 729.48 = 377.80 : x
  2. Step 2: Convert to fraction form
    486.32/729.48 = 377.80/x
  3. Step 3: Cross multiply
    486.32x = 729.48 × 377.80
  4. Step 4: Simplify right side
    486.32x = 275,597.54
  5. Step 5: Solve for x
    x = 275,597.54/486.32
  6. Step 6: Final answer
    x = 566.70

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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.