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Finding the Fourth Proportional to 908.99, 1,253.97 and 614.36

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Solution

The fourth proportional to 908.99, 1,253.97 and 614.36 is: 847.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.99 : 1,253.97 = 614.36 : x
  2. Step 2: Convert to fraction form
    908.99/1,253.97 = 614.36/x
  3. Step 3: Cross multiply
    908.99x = 1,253.97 × 614.36
  4. Step 4: Simplify right side
    908.99x = 770,382.74
  5. Step 5: Solve for x
    x = 770,382.74/908.99
  6. Step 6: Final answer
    x = 847.52

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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.