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Finding the Fourth Proportional to 549.37, 756.87 and 451.75

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Solution

The fourth proportional to 549.37, 756.87 and 451.75 is: 622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.37 : 756.87 = 451.75 : x
  2. Step 2: Convert to fraction form
    549.37/756.87 = 451.75/x
  3. Step 3: Cross multiply
    549.37x = 756.87 × 451.75
  4. Step 4: Simplify right side
    549.37x = 341,916.02
  5. Step 5: Solve for x
    x = 341,916.02/549.37
  6. Step 6: Final answer
    x = 622.38

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1.5x scale

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.