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Finding the Fourth Proportional to 937.67, 1,292.54 and 771.59

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Solution

The fourth proportional to 937.67, 1,292.54 and 771.59 is: 1,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.67 : 1,292.54 = 771.59 : x
  2. Step 2: Convert to fraction form
    937.67/1,292.54 = 771.59/x
  3. Step 3: Cross multiply
    937.67x = 1,292.54 × 771.59
  4. Step 4: Simplify right side
    937.67x = 997,300.62
  5. Step 5: Solve for x
    x = 997,300.62/937.67
  6. Step 6: Final answer
    x = 1,063.60

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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.