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Finding the Fourth Proportional to 887.24, 1,222.62 and 653.96

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Solution

The fourth proportional to 887.24, 1,222.62 and 653.96 is: 901.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.24 : 1,222.62 = 653.96 : x
  2. Step 2: Convert to fraction form
    887.24/1,222.62 = 653.96/x
  3. Step 3: Cross multiply
    887.24x = 1,222.62 × 653.96
  4. Step 4: Simplify right side
    887.24x = 799,544.58
  5. Step 5: Solve for x
    x = 799,544.58/887.24
  6. Step 6: Final answer
    x = 901.16

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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.