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Finding the Fourth Proportional to 883.89, 1,220.03 and 552.15

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Solution

The fourth proportional to 883.89, 1,220.03 and 552.15 is: 762.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.89 : 1,220.03 = 552.15 : x
  2. Step 2: Convert to fraction form
    883.89/1,220.03 = 552.15/x
  3. Step 3: Cross multiply
    883.89x = 1,220.03 × 552.15
  4. Step 4: Simplify right side
    883.89x = 673,636.80
  5. Step 5: Solve for x
    x = 673,636.80/883.89
  6. Step 6: Final answer
    x = 762.13

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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.