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Finding the Fourth Proportional to 664.97, 917.66 and 370.27

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Solution

The fourth proportional to 664.97, 917.66 and 370.27 is: 510.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.97 : 917.66 = 370.27 : x
  2. Step 2: Convert to fraction form
    664.97/917.66 = 370.27/x
  3. Step 3: Cross multiply
    664.97x = 917.66 × 370.27
  4. Step 4: Simplify right side
    664.97x = 339,780.60
  5. Step 5: Solve for x
    x = 339,780.60/664.97
  6. Step 6: Final answer
    x = 510.97

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Why These Related Problems?

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