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Finding the Fourth Proportional to 887.13, 1,224.26 and 488.81

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Solution

The fourth proportional to 887.13, 1,224.26 and 488.81 is: 674.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.13 : 1,224.26 = 488.81 : x
  2. Step 2: Convert to fraction form
    887.13/1,224.26 = 488.81/x
  3. Step 3: Cross multiply
    887.13x = 1,224.26 × 488.81
  4. Step 4: Simplify right side
    887.13x = 598,421.97
  5. Step 5: Solve for x
    x = 598,421.97/887.13
  6. Step 6: Final answer
    x = 674.56

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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.