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Finding the Fourth Proportional to 397.32, 547.78 and 364.52

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Solution

The fourth proportional to 397.32, 547.78 and 364.52 is: 502.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.32 : 547.78 = 364.52 : x
  2. Step 2: Convert to fraction form
    397.32/547.78 = 364.52/x
  3. Step 3: Cross multiply
    397.32x = 547.78 × 364.52
  4. Step 4: Simplify right side
    397.32x = 199,676.77
  5. Step 5: Solve for x
    x = 199,676.77/397.32
  6. Step 6: Final answer
    x = 502.56

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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.