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Finding the Fourth Proportional to 868.91, 1,200.04 and 606.47

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Solution

The fourth proportional to 868.91, 1,200.04 and 606.47 is: 837.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.91 : 1,200.04 = 606.47 : x
  2. Step 2: Convert to fraction form
    868.91/1,200.04 = 606.47/x
  3. Step 3: Cross multiply
    868.91x = 1,200.04 × 606.47
  4. Step 4: Simplify right side
    868.91x = 727,780.74
  5. Step 5: Solve for x
    x = 727,780.74/868.91
  6. Step 6: Final answer
    x = 837.58

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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.