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Finding the Fourth Proportional to 908.15, 1,254.41 and 751.41

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Solution

The fourth proportional to 908.15, 1,254.41 and 751.41 is: 1,037.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.15 : 1,254.41 = 751.41 : x
  2. Step 2: Convert to fraction form
    908.15/1,254.41 = 751.41/x
  3. Step 3: Cross multiply
    908.15x = 1,254.41 × 751.41
  4. Step 4: Simplify right side
    908.15x = 942,572.46
  5. Step 5: Solve for x
    x = 942,572.46/908.15
  6. Step 6: Final answer
    x = 1,037.91

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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.