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Finding the Fourth Proportional to 648.65, 973.64 and 433.73

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Solution

The fourth proportional to 648.65, 973.64 and 433.73 is: 651.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    648.65 : 973.64 = 433.73 : x
  2. Step 2: Convert to fraction form
    648.65/973.64 = 433.73/x
  3. Step 3: Cross multiply
    648.65x = 973.64 × 433.73
  4. Step 4: Simplify right side
    648.65x = 422,293.09
  5. Step 5: Solve for x
    x = 422,293.09/648.65
  6. Step 6: Final answer
    x = 651.04

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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.