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Finding the Fourth Proportional to 640.56, 883.44 and 452.12

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Solution

The fourth proportional to 640.56, 883.44 and 452.12 is: 623.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.56 : 883.44 = 452.12 : x
  2. Step 2: Convert to fraction form
    640.56/883.44 = 452.12/x
  3. Step 3: Cross multiply
    640.56x = 883.44 × 452.12
  4. Step 4: Simplify right side
    640.56x = 399,423.93
  5. Step 5: Solve for x
    x = 399,423.93/640.56
  6. Step 6: Final answer
    x = 623.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.