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Finding the Fourth Proportional to 264.97, 397.50 and 102.70

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Solution

The fourth proportional to 264.97, 397.50 and 102.70 is: 154.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.97 : 397.50 = 102.70 : x
  2. Step 2: Convert to fraction form
    264.97/397.50 = 102.70/x
  3. Step 3: Cross multiply
    264.97x = 397.50 × 102.70
  4. Step 4: Simplify right side
    264.97x = 40,823.25
  5. Step 5: Solve for x
    x = 40,823.25/264.97
  6. Step 6: Final answer
    x = 154.07

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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.