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Finding the Fourth Proportional to 887.22, 1,329.94 and 497.55

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Solution

The fourth proportional to 887.22, 1,329.94 and 497.55 is: 745.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.22 : 1,329.94 = 497.55 : x
  2. Step 2: Convert to fraction form
    887.22/1,329.94 = 497.55/x
  3. Step 3: Cross multiply
    887.22x = 1,329.94 × 497.55
  4. Step 4: Simplify right side
    887.22x = 661,711.65
  5. Step 5: Solve for x
    x = 661,711.65/887.22
  6. Step 6: Final answer
    x = 745.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.