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Finding the Fourth Proportional to 937.15, 1,292.06 and 768.48

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Solution

The fourth proportional to 937.15, 1,292.06 and 768.48 is: 1,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.15 : 1,292.06 = 768.48 : x
  2. Step 2: Convert to fraction form
    937.15/1,292.06 = 768.48/x
  3. Step 3: Cross multiply
    937.15x = 1,292.06 × 768.48
  4. Step 4: Simplify right side
    937.15x = 992,918.43
  5. Step 5: Solve for x
    x = 992,918.43/937.15
  6. Step 6: Final answer
    x = 1,059.51

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1.5x scale

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.