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Finding the Fourth Proportional to 388.43, 582.78 and 183.03

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Solution

The fourth proportional to 388.43, 582.78 and 183.03 is: 274.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.43 : 582.78 = 183.03 : x
  2. Step 2: Convert to fraction form
    388.43/582.78 = 183.03/x
  3. Step 3: Cross multiply
    388.43x = 582.78 × 183.03
  4. Step 4: Simplify right side
    388.43x = 106,666.22
  5. Step 5: Solve for x
    x = 106,666.22/388.43
  6. Step 6: Final answer
    x = 274.61

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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.