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Finding the Fourth Proportional to 492.13, 737.61 and 217.64

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Solution

The fourth proportional to 492.13, 737.61 and 217.64 is: 326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.13 : 737.61 = 217.64 : x
  2. Step 2: Convert to fraction form
    492.13/737.61 = 217.64/x
  3. Step 3: Cross multiply
    492.13x = 737.61 × 217.64
  4. Step 4: Simplify right side
    492.13x = 160,533.44
  5. Step 5: Solve for x
    x = 160,533.44/492.13
  6. Step 6: Final answer
    x = 326.20

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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.