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Finding the Fourth Proportional to 883.38, 1,219.20 and 673.20

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Solution

The fourth proportional to 883.38, 1,219.20 and 673.20 is: 929.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.38 : 1,219.20 = 673.20 : x
  2. Step 2: Convert to fraction form
    883.38/1,219.20 = 673.20/x
  3. Step 3: Cross multiply
    883.38x = 1,219.20 × 673.20
  4. Step 4: Simplify right side
    883.38x = 820,765.44
  5. Step 5: Solve for x
    x = 820,765.44/883.38
  6. Step 6: Final answer
    x = 929.12

Related Problems

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Half scale
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Double scale
Find fourth proportional to 884.38, 1,220.58 and 674.20
Similar ratio
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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.