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Finding the Fourth Proportional to 430.44, 594.08 and 255.80

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Solution

The fourth proportional to 430.44, 594.08 and 255.80 is: 353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.44 : 594.08 = 255.80 : x
  2. Step 2: Convert to fraction form
    430.44/594.08 = 255.80/x
  3. Step 3: Cross multiply
    430.44x = 594.08 × 255.80
  4. Step 4: Simplify right side
    430.44x = 151,965.66
  5. Step 5: Solve for x
    x = 151,965.66/430.44
  6. Step 6: Final answer
    x = 353.05

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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.