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Finding the Fourth Proportional to 430.20, 593.34 and 290.28

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Solution

The fourth proportional to 430.20, 593.34 and 290.28 is: 400.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.20 : 593.34 = 290.28 : x
  2. Step 2: Convert to fraction form
    430.20/593.34 = 290.28/x
  3. Step 3: Cross multiply
    430.20x = 593.34 × 290.28
  4. Step 4: Simplify right side
    430.20x = 172,234.74
  5. Step 5: Solve for x
    x = 172,234.74/430.20
  6. Step 6: Final answer
    x = 400.36

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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.