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Finding the Fourth Proportional to 264.50, 364.99 and 215.29

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Solution

The fourth proportional to 264.50, 364.99 and 215.29 is: 297.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.50 : 364.99 = 215.29 : x
  2. Step 2: Convert to fraction form
    264.50/364.99 = 215.29/x
  3. Step 3: Cross multiply
    264.50x = 364.99 × 215.29
  4. Step 4: Simplify right side
    264.50x = 78,578.70
  5. Step 5: Solve for x
    x = 78,578.70/264.50
  6. Step 6: Final answer
    x = 297.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.