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Finding the Fourth Proportional to 887.37, 1,224.39 and 514.38

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Solution

The fourth proportional to 887.37, 1,224.39 and 514.38 is: 709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.37 : 1,224.39 = 514.38 : x
  2. Step 2: Convert to fraction form
    887.37/1,224.39 = 514.38/x
  3. Step 3: Cross multiply
    887.37x = 1,224.39 × 514.38
  4. Step 4: Simplify right side
    887.37x = 629,801.73
  5. Step 5: Solve for x
    x = 629,801.73/887.37
  6. Step 6: Final answer
    x = 709.74

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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.