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Finding the Fourth Proportional to 395.24, 543.96 and 284.52

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Solution

The fourth proportional to 395.24, 543.96 and 284.52 is: 391.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.24 : 543.96 = 284.52 : x
  2. Step 2: Convert to fraction form
    395.24/543.96 = 284.52/x
  3. Step 3: Cross multiply
    395.24x = 543.96 × 284.52
  4. Step 4: Simplify right side
    395.24x = 154,767.50
  5. Step 5: Solve for x
    x = 154,767.50/395.24
  6. Step 6: Final answer
    x = 391.58

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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.