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Finding the Fourth Proportional to 444.75, 666.99 and 152.20

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Solution

The fourth proportional to 444.75, 666.99 and 152.20 is: 228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.75 : 666.99 = 152.20 : x
  2. Step 2: Convert to fraction form
    444.75/666.99 = 152.20/x
  3. Step 3: Cross multiply
    444.75x = 666.99 × 152.20
  4. Step 4: Simplify right side
    444.75x = 101,515.88
  5. Step 5: Solve for x
    x = 101,515.88/444.75
  6. Step 6: Final answer
    x = 228.25

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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.