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Finding the Fourth Proportional to 660.88, 911.93 and 366.11

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Solution

The fourth proportional to 660.88, 911.93 and 366.11 is: 505.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.88 : 911.93 = 366.11 : x
  2. Step 2: Convert to fraction form
    660.88/911.93 = 366.11/x
  3. Step 3: Cross multiply
    660.88x = 911.93 × 366.11
  4. Step 4: Simplify right side
    660.88x = 333,862.13
  5. Step 5: Solve for x
    x = 333,862.13/660.88
  6. Step 6: Final answer
    x = 505.18

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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.