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Finding the Fourth Proportional to 609.71, 914.49 and 488.70

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Solution

The fourth proportional to 609.71, 914.49 and 488.70 is: 733.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.71 : 914.49 = 488.70 : x
  2. Step 2: Convert to fraction form
    609.71/914.49 = 488.70/x
  3. Step 3: Cross multiply
    609.71x = 914.49 × 488.70
  4. Step 4: Simplify right side
    609.71x = 446,911.26
  5. Step 5: Solve for x
    x = 446,911.26/609.71
  6. Step 6: Final answer
    x = 733.00

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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.