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Finding the Fourth Proportional to 364.72, 547.69 and 325.74

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Solution

The fourth proportional to 364.72, 547.69 and 325.74 is: 489.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    364.72 : 547.69 = 325.74 : x
  2. Step 2: Convert to fraction form
    364.72/547.69 = 325.74/x
  3. Step 3: Cross multiply
    364.72x = 547.69 × 325.74
  4. Step 4: Simplify right side
    364.72x = 178,404.54
  5. Step 5: Solve for x
    x = 178,404.54/364.72
  6. Step 6: Final answer
    x = 489.15

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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.