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Finding the Fourth Proportional to 934.37, 1,401.56 and 880.91

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Solution

The fourth proportional to 934.37, 1,401.56 and 880.91 is: 1,321.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.37 : 1,401.56 = 880.91 : x
  2. Step 2: Convert to fraction form
    934.37/1,401.56 = 880.91/x
  3. Step 3: Cross multiply
    934.37x = 1,401.56 × 880.91
  4. Step 4: Simplify right side
    934.37x = 1,234,643.82
  5. Step 5: Solve for x
    x = 1,234,643.82/934.37
  6. Step 6: Final answer
    x = 1,321.37

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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.