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Finding the Fourth Proportional to 946.92, 1,309.49 and 903.41

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Solution

The fourth proportional to 946.92, 1,309.49 and 903.41 is: 1,249.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.92 : 1,309.49 = 903.41 : x
  2. Step 2: Convert to fraction form
    946.92/1,309.49 = 903.41/x
  3. Step 3: Cross multiply
    946.92x = 1,309.49 × 903.41
  4. Step 4: Simplify right side
    946.92x = 1,182,995.30
  5. Step 5: Solve for x
    x = 1,182,995.30/946.92
  6. Step 6: Final answer
    x = 1,249.31

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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.