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Finding the Fourth Proportional to 664.72, 997.16 and 473.92

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Solution

The fourth proportional to 664.72, 997.16 and 473.92 is: 710.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.72 : 997.16 = 473.92 : x
  2. Step 2: Convert to fraction form
    664.72/997.16 = 473.92/x
  3. Step 3: Cross multiply
    664.72x = 997.16 × 473.92
  4. Step 4: Simplify right side
    664.72x = 472,574.07
  5. Step 5: Solve for x
    x = 472,574.07/664.72
  6. Step 6: Final answer
    x = 710.94

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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.