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Finding the Fourth Proportional to 934.04, 1,401.42 and 356.78

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Solution

The fourth proportional to 934.04, 1,401.42 and 356.78 is: 535.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.04 : 1,401.42 = 356.78 : x
  2. Step 2: Convert to fraction form
    934.04/1,401.42 = 356.78/x
  3. Step 3: Cross multiply
    934.04x = 1,401.42 × 356.78
  4. Step 4: Simplify right side
    934.04x = 499,998.63
  5. Step 5: Solve for x
    x = 499,998.63/934.04
  6. Step 6: Final answer
    x = 535.31

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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.