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Finding the Fourth Proportional to 640.04, 882.72 and 453.54

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Solution

The fourth proportional to 640.04, 882.72 and 453.54 is: 625.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.04 : 882.72 = 453.54 : x
  2. Step 2: Convert to fraction form
    640.04/882.72 = 453.54/x
  3. Step 3: Cross multiply
    640.04x = 882.72 × 453.54
  4. Step 4: Simplify right side
    640.04x = 400,348.83
  5. Step 5: Solve for x
    x = 400,348.83/640.04
  6. Step 6: Final answer
    x = 625.51

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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.