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Finding the Fourth Proportional to 883.44, 1,217.28 and 603.72

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Solution

The fourth proportional to 883.44, 1,217.28 and 603.72 is: 831.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.44 : 1,217.28 = 603.72 : x
  2. Step 2: Convert to fraction form
    883.44/1,217.28 = 603.72/x
  3. Step 3: Cross multiply
    883.44x = 1,217.28 × 603.72
  4. Step 4: Simplify right side
    883.44x = 734,896.28
  5. Step 5: Solve for x
    x = 734,896.28/883.44
  6. Step 6: Final answer
    x = 831.86

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Double scale
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1.5x scale

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.