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Finding the Fourth Proportional to 255.68, 384.24 and 248.48

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Solution

The fourth proportional to 255.68, 384.24 and 248.48 is: 373.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.68 : 384.24 = 248.48 : x
  2. Step 2: Convert to fraction form
    255.68/384.24 = 248.48/x
  3. Step 3: Cross multiply
    255.68x = 384.24 × 248.48
  4. Step 4: Simplify right side
    255.68x = 95,475.96
  5. Step 5: Solve for x
    x = 95,475.96/255.68
  6. Step 6: Final answer
    x = 373.42

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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.