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Finding the Fourth Proportional to 883.81, 1,220.57 and 662.41

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Solution

The fourth proportional to 883.81, 1,220.57 and 662.41 is: 914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.81 : 1,220.57 = 662.41 : x
  2. Step 2: Convert to fraction form
    883.81/1,220.57 = 662.41/x
  3. Step 3: Cross multiply
    883.81x = 1,220.57 × 662.41
  4. Step 4: Simplify right side
    883.81x = 808,514.46
  5. Step 5: Solve for x
    x = 808,514.46/883.81
  6. Step 6: Final answer
    x = 914.81

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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.