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Finding the Fourth Proportional to 561.19, 768.95 and 552.99

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Solution

The fourth proportional to 561.19, 768.95 and 552.99 is: 757.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.19 : 768.95 = 552.99 : x
  2. Step 2: Convert to fraction form
    561.19/768.95 = 552.99/x
  3. Step 3: Cross multiply
    561.19x = 768.95 × 552.99
  4. Step 4: Simplify right side
    561.19x = 425,221.66
  5. Step 5: Solve for x
    x = 425,221.66/561.19
  6. Step 6: Final answer
    x = 757.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.