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Finding the Fourth Proportional to 444.40, 665.70 and 228.10

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Solution

The fourth proportional to 444.40, 665.70 and 228.10 is: 341.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.40 : 665.70 = 228.10 : x
  2. Step 2: Convert to fraction form
    444.40/665.70 = 228.10/x
  3. Step 3: Cross multiply
    444.40x = 665.70 × 228.10
  4. Step 4: Simplify right side
    444.40x = 151,846.17
  5. Step 5: Solve for x
    x = 151,846.17/444.40
  6. Step 6: Final answer
    x = 341.69

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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.