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Finding the Fourth Proportional to 444.94, 666.68 and 290.64

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Solution

The fourth proportional to 444.94, 666.68 and 290.64 is: 435.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.94 : 666.68 = 290.64 : x
  2. Step 2: Convert to fraction form
    444.94/666.68 = 290.64/x
  3. Step 3: Cross multiply
    444.94x = 666.68 × 290.64
  4. Step 4: Simplify right side
    444.94x = 193,763.88
  5. Step 5: Solve for x
    x = 193,763.88/444.94
  6. Step 6: Final answer
    x = 435.48

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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.