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Finding the Fourth Proportional to 429.86, 593.43 and 290.72

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Solution

The fourth proportional to 429.86, 593.43 and 290.72 is: 401.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.86 : 593.43 = 290.72 : x
  2. Step 2: Convert to fraction form
    429.86/593.43 = 290.72/x
  3. Step 3: Cross multiply
    429.86x = 593.43 × 290.72
  4. Step 4: Simplify right side
    429.86x = 172,519.00
  5. Step 5: Solve for x
    x = 172,519.00/429.86
  6. Step 6: Final answer
    x = 401.34

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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.