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Finding the Fourth Proportional to 866.94, 1,300.80 and 404.46

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Solution

The fourth proportional to 866.94, 1,300.80 and 404.46 is: 606.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.94 : 1,300.80 = 404.46 : x
  2. Step 2: Convert to fraction form
    866.94/1,300.80 = 404.46/x
  3. Step 3: Cross multiply
    866.94x = 1,300.80 × 404.46
  4. Step 4: Simplify right side
    866.94x = 526,121.57
  5. Step 5: Solve for x
    x = 526,121.57/866.94
  6. Step 6: Final answer
    x = 606.87

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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.