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Finding the Fourth Proportional to 934.46, 1,288.68 and 738.44

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Solution

The fourth proportional to 934.46, 1,288.68 and 738.44 is: 1,018.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.46 : 1,288.68 = 738.44 : x
  2. Step 2: Convert to fraction form
    934.46/1,288.68 = 738.44/x
  3. Step 3: Cross multiply
    934.46x = 1,288.68 × 738.44
  4. Step 4: Simplify right side
    934.46x = 951,612.86
  5. Step 5: Solve for x
    x = 951,612.86/934.46
  6. Step 6: Final answer
    x = 1,018.36

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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.