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Finding the Fourth Proportional to 621.64, 934.62 and 574.12

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Solution

The fourth proportional to 621.64, 934.62 and 574.12 is: 863.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.64 : 934.62 = 574.12 : x
  2. Step 2: Convert to fraction form
    621.64/934.62 = 574.12/x
  3. Step 3: Cross multiply
    621.64x = 934.62 × 574.12
  4. Step 4: Simplify right side
    621.64x = 536,584.03
  5. Step 5: Solve for x
    x = 536,584.03/621.64
  6. Step 6: Final answer
    x = 863.17

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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.