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Finding the Fourth Proportional to 395.14, 548.57 and 383.26

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Solution

The fourth proportional to 395.14, 548.57 and 383.26 is: 532.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.14 : 548.57 = 383.26 : x
  2. Step 2: Convert to fraction form
    395.14/548.57 = 383.26/x
  3. Step 3: Cross multiply
    395.14x = 548.57 × 383.26
  4. Step 4: Simplify right side
    395.14x = 210,244.94
  5. Step 5: Solve for x
    x = 210,244.94/395.14
  6. Step 6: Final answer
    x = 532.08

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.