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Finding the Fourth Proportional to 444.00, 665.71 and 212.88

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Solution

The fourth proportional to 444.00, 665.71 and 212.88 is: 319.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.00 : 665.71 = 212.88 : x
  2. Step 2: Convert to fraction form
    444.00/665.71 = 212.88/x
  3. Step 3: Cross multiply
    444.00x = 665.71 × 212.88
  4. Step 4: Simplify right side
    444.00x = 141,715.28
  5. Step 5: Solve for x
    x = 141,715.28/444.00
  6. Step 6: Final answer
    x = 319.18

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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.