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Finding the Fourth Proportional to 937.60, 1,405.42 and 608.13

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Solution

The fourth proportional to 937.60, 1,405.42 and 608.13 is: 911.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.60 : 1,405.42 = 608.13 : x
  2. Step 2: Convert to fraction form
    937.60/1,405.42 = 608.13/x
  3. Step 3: Cross multiply
    937.60x = 1,405.42 × 608.13
  4. Step 4: Simplify right side
    937.60x = 854,676.54
  5. Step 5: Solve for x
    x = 854,676.54/937.60
  6. Step 6: Final answer
    x = 911.56

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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.