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Finding the Fourth Proportional to 883.70, 1,220.28 and 552.69

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Solution

The fourth proportional to 883.70, 1,220.28 and 552.69 is: 763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.70 : 1,220.28 = 552.69 : x
  2. Step 2: Convert to fraction form
    883.70/1,220.28 = 552.69/x
  3. Step 3: Cross multiply
    883.70x = 1,220.28 × 552.69
  4. Step 4: Simplify right side
    883.70x = 674,436.55
  5. Step 5: Solve for x
    x = 674,436.55/883.70
  6. Step 6: Final answer
    x = 763.20

Related Problems

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Half scale
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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.