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Finding the Fourth Proportional to 657.20, 984.58 and 492.36

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Solution

The fourth proportional to 657.20, 984.58 and 492.36 is: 737.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.20 : 984.58 = 492.36 : x
  2. Step 2: Convert to fraction form
    657.20/984.58 = 492.36/x
  3. Step 3: Cross multiply
    657.20x = 984.58 × 492.36
  4. Step 4: Simplify right side
    657.20x = 484,767.81
  5. Step 5: Solve for x
    x = 484,767.81/657.20
  6. Step 6: Final answer
    x = 737.63

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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.