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Finding the Fourth Proportional to 264.24, 396.60 and 120

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Solution

The fourth proportional to 264.24, 396.60 and 120 is: 180.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.24 : 396.60 = 120 : x
  2. Step 2: Convert to fraction form
    264.24/396.60 = 120/x
  3. Step 3: Cross multiply
    264.24x = 396.60 × 120
  4. Step 4: Simplify right side
    264.24x = 47,592
  5. Step 5: Solve for x
    x = 47,592/264.24
  6. Step 6: Final answer
    x = 180.11

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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.