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Finding the Fourth Proportional to 377.88, 521.50 and 222.66

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Solution

The fourth proportional to 377.88, 521.50 and 222.66 is: 307.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.88 : 521.50 = 222.66 : x
  2. Step 2: Convert to fraction form
    377.88/521.50 = 222.66/x
  3. Step 3: Cross multiply
    377.88x = 521.50 × 222.66
  4. Step 4: Simplify right side
    377.88x = 116,117.19
  5. Step 5: Solve for x
    x = 116,117.19/377.88
  6. Step 6: Final answer
    x = 307.29

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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.