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Finding the Fourth Proportional to 482.20, 666.29 and 377.57

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Solution

The fourth proportional to 482.20, 666.29 and 377.57 is: 521.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.20 : 666.29 = 377.57 : x
  2. Step 2: Convert to fraction form
    482.20/666.29 = 377.57/x
  3. Step 3: Cross multiply
    482.20x = 666.29 × 377.57
  4. Step 4: Simplify right side
    482.20x = 251,571.12
  5. Step 5: Solve for x
    x = 251,571.12/482.20
  6. Step 6: Final answer
    x = 521.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.