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Finding the Fourth Proportional to 444.12, 665.82 and 261.60

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Solution

The fourth proportional to 444.12, 665.82 and 261.60 is: 392.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.12 : 665.82 = 261.60 : x
  2. Step 2: Convert to fraction form
    444.12/665.82 = 261.60/x
  3. Step 3: Cross multiply
    444.12x = 665.82 × 261.60
  4. Step 4: Simplify right side
    444.12x = 174,178.51
  5. Step 5: Solve for x
    x = 174,178.51/444.12
  6. Step 6: Final answer
    x = 392.19

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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.