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Finding the Fourth Proportional to 666, 919.32 and 444.87

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Solution

The fourth proportional to 666, 919.32 and 444.87 is: 614.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    666 : 919.32 = 444.87 : x
  2. Step 2: Convert to fraction form
    666/919.32 = 444.87/x
  3. Step 3: Cross multiply
    666x = 919.32 × 444.87
  4. Step 4: Simplify right side
    666x = 408,977.89
  5. Step 5: Solve for x
    x = 408,977.89/666
  6. Step 6: Final answer
    x = 614.08

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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.