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Finding the Fourth Proportional to 255.95, 384.38 and 229.52

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Solution

The fourth proportional to 255.95, 384.38 and 229.52 is: 344.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.95 : 384.38 = 229.52 : x
  2. Step 2: Convert to fraction form
    255.95/384.38 = 229.52/x
  3. Step 3: Cross multiply
    255.95x = 384.38 × 229.52
  4. Step 4: Simplify right side
    255.95x = 88,224.43
  5. Step 5: Solve for x
    x = 88,224.43/255.95
  6. Step 6: Final answer
    x = 344.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.