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Finding the Fourth Proportional to 264.40, 396.72 and 154.88

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Solution

The fourth proportional to 264.40, 396.72 and 154.88 is: 232.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.40 : 396.72 = 154.88 : x
  2. Step 2: Convert to fraction form
    264.40/396.72 = 154.88/x
  3. Step 3: Cross multiply
    264.40x = 396.72 × 154.88
  4. Step 4: Simplify right side
    264.40x = 61,443.99
  5. Step 5: Solve for x
    x = 61,443.99/264.40
  6. Step 6: Final answer
    x = 232.39

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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.