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Finding the Fourth Proportional to 518.31, 773.55 and 452.16

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Solution

The fourth proportional to 518.31, 773.55 and 452.16 is: 674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.31 : 773.55 = 452.16 : x
  2. Step 2: Convert to fraction form
    518.31/773.55 = 452.16/x
  3. Step 3: Cross multiply
    518.31x = 773.55 × 452.16
  4. Step 4: Simplify right side
    518.31x = 349,768.37
  5. Step 5: Solve for x
    x = 349,768.37/518.31
  6. Step 6: Final answer
    x = 674.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.