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Finding the Fourth Proportional to 561.16, 773.46 and 450.28

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Solution

The fourth proportional to 561.16, 773.46 and 450.28 is: 620.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.16 : 773.46 = 450.28 : x
  2. Step 2: Convert to fraction form
    561.16/773.46 = 450.28/x
  3. Step 3: Cross multiply
    561.16x = 773.46 × 450.28
  4. Step 4: Simplify right side
    561.16x = 348,273.57
  5. Step 5: Solve for x
    x = 348,273.57/561.16
  6. Step 6: Final answer
    x = 620.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.