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Finding the Fourth Proportional to 340.88, 469.88 and 222.64

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Solution

The fourth proportional to 340.88, 469.88 and 222.64 is: 306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.88 : 469.88 = 222.64 : x
  2. Step 2: Convert to fraction form
    340.88/469.88 = 222.64/x
  3. Step 3: Cross multiply
    340.88x = 469.88 × 222.64
  4. Step 4: Simplify right side
    340.88x = 104,611.80
  5. Step 5: Solve for x
    x = 104,611.80/340.88
  6. Step 6: Final answer
    x = 306.89

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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.