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Finding the Fourth Proportional to 430.31, 593.83 and 255.66

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Solution

The fourth proportional to 430.31, 593.83 and 255.66 is: 352.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.31 : 593.83 = 255.66 : x
  2. Step 2: Convert to fraction form
    430.31/593.83 = 255.66/x
  3. Step 3: Cross multiply
    430.31x = 593.83 × 255.66
  4. Step 4: Simplify right side
    430.31x = 151,816.67
  5. Step 5: Solve for x
    x = 151,816.67/430.31
  6. Step 6: Final answer
    x = 352.81

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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.