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Finding the Fourth Proportional to 887.79, 1,225.26 and 533.73

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Solution

The fourth proportional to 887.79, 1,225.26 and 533.73 is: 736.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.79 : 1,225.26 = 533.73 : x
  2. Step 2: Convert to fraction form
    887.79/1,225.26 = 533.73/x
  3. Step 3: Cross multiply
    887.79x = 1,225.26 × 533.73
  4. Step 4: Simplify right side
    887.79x = 653,958.02
  5. Step 5: Solve for x
    x = 653,958.02/887.79
  6. Step 6: Final answer
    x = 736.61

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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.