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Finding the Fourth Proportional to 444.23, 665.69 and 279.30

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Solution

The fourth proportional to 444.23, 665.69 and 279.30 is: 418.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.23 : 665.69 = 279.30 : x
  2. Step 2: Convert to fraction form
    444.23/665.69 = 279.30/x
  3. Step 3: Cross multiply
    444.23x = 665.69 × 279.30
  4. Step 4: Simplify right side
    444.23x = 185,925.82
  5. Step 5: Solve for x
    x = 185,925.82/444.23
  6. Step 6: Final answer
    x = 418.54

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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.