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Finding the Fourth Proportional to 887.39, 1,224.61 and 494.42

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Solution

The fourth proportional to 887.39, 1,224.61 and 494.42 is: 682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.39 : 1,224.61 = 494.42 : x
  2. Step 2: Convert to fraction form
    887.39/1,224.61 = 494.42/x
  3. Step 3: Cross multiply
    887.39x = 1,224.61 × 494.42
  4. Step 4: Simplify right side
    887.39x = 605,467.10
  5. Step 5: Solve for x
    x = 605,467.10/887.39
  6. Step 6: Final answer
    x = 682.30

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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.