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Finding the Fourth Proportional to 665.46, 918.33 and 370.73

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Solution

The fourth proportional to 665.46, 918.33 and 370.73 is: 511.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.46 : 918.33 = 370.73 : x
  2. Step 2: Convert to fraction form
    665.46/918.33 = 370.73/x
  3. Step 3: Cross multiply
    665.46x = 918.33 × 370.73
  4. Step 4: Simplify right side
    665.46x = 340,447.89
  5. Step 5: Solve for x
    x = 340,447.89/665.46
  6. Step 6: Final answer
    x = 511.60

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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.