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Finding the Fourth Proportional to 465.24, 696.72 and 248.28

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Solution

The fourth proportional to 465.24, 696.72 and 248.28 is: 371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.24 : 696.72 = 248.28 : x
  2. Step 2: Convert to fraction form
    465.24/696.72 = 248.28/x
  3. Step 3: Cross multiply
    465.24x = 696.72 × 248.28
  4. Step 4: Simplify right side
    465.24x = 172,981.64
  5. Step 5: Solve for x
    x = 172,981.64/465.24
  6. Step 6: Final answer
    x = 371.81

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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.