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Finding the Fourth Proportional to 296.81, 445.89 and 255.80

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Solution

The fourth proportional to 296.81, 445.89 and 255.80 is: 384.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.81 : 445.89 = 255.80 : x
  2. Step 2: Convert to fraction form
    296.81/445.89 = 255.80/x
  3. Step 3: Cross multiply
    296.81x = 445.89 × 255.80
  4. Step 4: Simplify right side
    296.81x = 114,060.74
  5. Step 5: Solve for x
    x = 114,060.74/296.81
  6. Step 6: Final answer
    x = 384.29

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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.