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Finding the Fourth Proportional to 621.49, 932.18 and 274.83

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Solution

The fourth proportional to 621.49, 932.18 and 274.83 is: 412.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.49 : 932.18 = 274.83 : x
  2. Step 2: Convert to fraction form
    621.49/932.18 = 274.83/x
  3. Step 3: Cross multiply
    621.49x = 932.18 × 274.83
  4. Step 4: Simplify right side
    621.49x = 256,191.56
  5. Step 5: Solve for x
    x = 256,191.56/621.49
  6. Step 6: Final answer
    x = 412.22

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1.5x scale

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.