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Finding the Fourth Proportional to 934.96, 1,404.60 and 906.88

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Solution

The fourth proportional to 934.96, 1,404.60 and 906.88 is: 1,362.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.96 : 1,404.60 = 906.88 : x
  2. Step 2: Convert to fraction form
    934.96/1,404.60 = 906.88/x
  3. Step 3: Cross multiply
    934.96x = 1,404.60 × 906.88
  4. Step 4: Simplify right side
    934.96x = 1,273,803.65
  5. Step 5: Solve for x
    x = 1,273,803.65/934.96
  6. Step 6: Final answer
    x = 1,362.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.