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Finding the Fourth Proportional to 395.64, 549.27 and 383.76

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Solution

The fourth proportional to 395.64, 549.27 and 383.76 is: 532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.64 : 549.27 = 383.76 : x
  2. Step 2: Convert to fraction form
    395.64/549.27 = 383.76/x
  3. Step 3: Cross multiply
    395.64x = 549.27 × 383.76
  4. Step 4: Simplify right side
    395.64x = 210,787.86
  5. Step 5: Solve for x
    x = 210,787.86/395.64
  6. Step 6: Final answer
    x = 532.78

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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.