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Finding the Fourth Proportional to 660.83, 912.02 and 366.12

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Solution

The fourth proportional to 660.83, 912.02 and 366.12 is: 505.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.83 : 912.02 = 366.12 : x
  2. Step 2: Convert to fraction form
    660.83/912.02 = 366.12/x
  3. Step 3: Cross multiply
    660.83x = 912.02 × 366.12
  4. Step 4: Simplify right side
    660.83x = 333,906.93
  5. Step 5: Solve for x
    x = 333,906.93/660.83
  6. Step 6: Final answer
    x = 505.29

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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.