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Finding the Fourth Proportional to 610.49, 914.94 and 445.95

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Solution

The fourth proportional to 610.49, 914.94 and 445.95 is: 668.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.49 : 914.94 = 445.95 : x
  2. Step 2: Convert to fraction form
    610.49/914.94 = 445.95/x
  3. Step 3: Cross multiply
    610.49x = 914.94 × 445.95
  4. Step 4: Simplify right side
    610.49x = 408,019.17
  5. Step 5: Solve for x
    x = 408,019.17/610.49
  6. Step 6: Final answer
    x = 668.34

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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.