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Finding the Fourth Proportional to 264.25, 364.64 and 215.04

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Solution

The fourth proportional to 264.25, 364.64 and 215.04 is: 296.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.25 : 364.64 = 215.04 : x
  2. Step 2: Convert to fraction form
    264.25/364.64 = 215.04/x
  3. Step 3: Cross multiply
    264.25x = 364.64 × 215.04
  4. Step 4: Simplify right side
    264.25x = 78,412.72
  5. Step 5: Solve for x
    x = 78,412.72/264.25
  6. Step 6: Final answer
    x = 296.74

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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.