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Finding the Fourth Proportional to 429.78, 593.03 and 243.25

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Solution

The fourth proportional to 429.78, 593.03 and 243.25 is: 335.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.78 : 593.03 = 243.25 : x
  2. Step 2: Convert to fraction form
    429.78/593.03 = 243.25/x
  3. Step 3: Cross multiply
    429.78x = 593.03 × 243.25
  4. Step 4: Simplify right side
    429.78x = 144,253.67
  5. Step 5: Solve for x
    x = 144,253.67/429.78
  6. Step 6: Final answer
    x = 335.64

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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.