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Finding the Fourth Proportional to 937.09, 1,291.81 and 656.46

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Solution

The fourth proportional to 937.09, 1,291.81 and 656.46 is: 904.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.09 : 1,291.81 = 656.46 : x
  2. Step 2: Convert to fraction form
    937.09/1,291.81 = 656.46/x
  3. Step 3: Cross multiply
    937.09x = 1,291.81 × 656.46
  4. Step 4: Simplify right side
    937.09x = 848,021.59
  5. Step 5: Solve for x
    x = 848,021.59/937.09
  6. Step 6: Final answer
    x = 904.95

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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.