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Finding the Fourth Proportional to 610.46, 915.27 and 220.37

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Solution

The fourth proportional to 610.46, 915.27 and 220.37 is: 330.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.46 : 915.27 = 220.37 : x
  2. Step 2: Convert to fraction form
    610.46/915.27 = 220.37/x
  3. Step 3: Cross multiply
    610.46x = 915.27 × 220.37
  4. Step 4: Simplify right side
    610.46x = 201,698.05
  5. Step 5: Solve for x
    x = 201,698.05/610.46
  6. Step 6: Final answer
    x = 330.40

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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.