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Finding the Fourth Proportional to 610.45, 915.73 and 245.15

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Solution

The fourth proportional to 610.45, 915.73 and 245.15 is: 367.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.45 : 915.73 = 245.15 : x
  2. Step 2: Convert to fraction form
    610.45/915.73 = 245.15/x
  3. Step 3: Cross multiply
    610.45x = 915.73 × 245.15
  4. Step 4: Simplify right side
    610.45x = 224,487.69
  5. Step 5: Solve for x
    x = 224,487.69/610.45
  6. Step 6: Final answer
    x = 367.74

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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.