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Finding the Fourth Proportional to 444.30, 666.48 and 136.18

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Solution

The fourth proportional to 444.30, 666.48 and 136.18 is: 204.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.30 : 666.48 = 136.18 : x
  2. Step 2: Convert to fraction form
    444.30/666.48 = 136.18/x
  3. Step 3: Cross multiply
    444.30x = 666.48 × 136.18
  4. Step 4: Simplify right side
    444.30x = 90,762.59
  5. Step 5: Solve for x
    x = 90,762.59/444.30
  6. Step 6: Final answer
    x = 204.28

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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.