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Finding the Fourth Proportional to 406.17, 559.52 and 380.66

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Solution

The fourth proportional to 406.17, 559.52 and 380.66 is: 524.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    406.17 : 559.52 = 380.66 : x
  2. Step 2: Convert to fraction form
    406.17/559.52 = 380.66/x
  3. Step 3: Cross multiply
    406.17x = 559.52 × 380.66
  4. Step 4: Simplify right side
    406.17x = 212,982.18
  5. Step 5: Solve for x
    x = 212,982.18/406.17
  6. Step 6: Final answer
    x = 524.37

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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.