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Finding the Fourth Proportional to 640.93, 957.89 and 467.96

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Solution

The fourth proportional to 640.93, 957.89 and 467.96 is: 699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.93 : 957.89 = 467.96 : x
  2. Step 2: Convert to fraction form
    640.93/957.89 = 467.96/x
  3. Step 3: Cross multiply
    640.93x = 957.89 × 467.96
  4. Step 4: Simplify right side
    640.93x = 448,256.93
  5. Step 5: Solve for x
    x = 448,256.93/640.93
  6. Step 6: Final answer
    x = 699.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.