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Finding the Fourth Proportional to 339.51, 468.40 and 222.87

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Solution

The fourth proportional to 339.51, 468.40 and 222.87 is: 307.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.51 : 468.40 = 222.87 : x
  2. Step 2: Convert to fraction form
    339.51/468.40 = 222.87/x
  3. Step 3: Cross multiply
    339.51x = 468.40 × 222.87
  4. Step 4: Simplify right side
    339.51x = 104,392.31
  5. Step 5: Solve for x
    x = 104,392.31/339.51
  6. Step 6: Final answer
    x = 307.48

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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.