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Finding the Fourth Proportional to 896.97, 1,345.38 and 247.68

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Solution

The fourth proportional to 896.97, 1,345.38 and 247.68 is: 371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.97 : 1,345.38 = 247.68 : x
  2. Step 2: Convert to fraction form
    896.97/1,345.38 = 247.68/x
  3. Step 3: Cross multiply
    896.97x = 1,345.38 × 247.68
  4. Step 4: Simplify right side
    896.97x = 333,223.72
  5. Step 5: Solve for x
    x = 333,223.72/896.97
  6. Step 6: Final answer
    x = 371.50

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Double scale
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1.5x scale

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.