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Finding the Fourth Proportional to 444.48, 666.78 and 228.07

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Solution

The fourth proportional to 444.48, 666.78 and 228.07 is: 342.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.48 : 666.78 = 228.07 : x
  2. Step 2: Convert to fraction form
    444.48/666.78 = 228.07/x
  3. Step 3: Cross multiply
    444.48x = 666.78 × 228.07
  4. Step 4: Simplify right side
    444.48x = 152,072.51
  5. Step 5: Solve for x
    x = 152,072.51/444.48
  6. Step 6: Final answer
    x = 342.14

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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.