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Finding the Fourth Proportional to 430.11, 593.32 and 330.79

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Solution

The fourth proportional to 430.11, 593.32 and 330.79 is: 456.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.11 : 593.32 = 330.79 : x
  2. Step 2: Convert to fraction form
    430.11/593.32 = 330.79/x
  3. Step 3: Cross multiply
    430.11x = 593.32 × 330.79
  4. Step 4: Simplify right side
    430.11x = 196,264.32
  5. Step 5: Solve for x
    x = 196,264.32/430.11
  6. Step 6: Final answer
    x = 456.31

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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.