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Finding the Fourth Proportional to 264.82, 397.16 and 187.55

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Solution

The fourth proportional to 264.82, 397.16 and 187.55 is: 281.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.82 : 397.16 = 187.55 : x
  2. Step 2: Convert to fraction form
    264.82/397.16 = 187.55/x
  3. Step 3: Cross multiply
    264.82x = 397.16 × 187.55
  4. Step 4: Simplify right side
    264.82x = 74,488.86
  5. Step 5: Solve for x
    x = 74,488.86/264.82
  6. Step 6: Final answer
    x = 281.28

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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.