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Finding the Fourth Proportional to 608.00, 909.97 and 515.05

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Solution

The fourth proportional to 608.00, 909.97 and 515.05 is: 770.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.00 : 909.97 = 515.05 : x
  2. Step 2: Convert to fraction form
    608.00/909.97 = 515.05/x
  3. Step 3: Cross multiply
    608.00x = 909.97 × 515.05
  4. Step 4: Simplify right side
    608.00x = 468,676.49
  5. Step 5: Solve for x
    x = 468,676.49/608.00
  6. Step 6: Final answer
    x = 770.86

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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.