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Finding the Fourth Proportional to 610.24, 915.24 and 220.30

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Solution

The fourth proportional to 610.24, 915.24 and 220.30 is: 330.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.24 : 915.24 = 220.30 : x
  2. Step 2: Convert to fraction form
    610.24/915.24 = 220.30/x
  3. Step 3: Cross multiply
    610.24x = 915.24 × 220.30
  4. Step 4: Simplify right side
    610.24x = 201,627.37
  5. Step 5: Solve for x
    x = 201,627.37/610.24
  6. Step 6: Final answer
    x = 330.41

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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.