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Finding the Fourth Proportional to 430.34, 593.95 and 255.79

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Solution

The fourth proportional to 430.34, 593.95 and 255.79 is: 353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.34 : 593.95 = 255.79 : x
  2. Step 2: Convert to fraction form
    430.34/593.95 = 255.79/x
  3. Step 3: Cross multiply
    430.34x = 593.95 × 255.79
  4. Step 4: Simplify right side
    430.34x = 151,923.50
  5. Step 5: Solve for x
    x = 151,923.50/430.34
  6. Step 6: Final answer
    x = 353.03

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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.