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Finding the Fourth Proportional to 539.72, 744.52 and 451.64

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Solution

The fourth proportional to 539.72, 744.52 and 451.64 is: 623.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.72 : 744.52 = 451.64 : x
  2. Step 2: Convert to fraction form
    539.72/744.52 = 451.64/x
  3. Step 3: Cross multiply
    539.72x = 744.52 × 451.64
  4. Step 4: Simplify right side
    539.72x = 336,255.01
  5. Step 5: Solve for x
    x = 336,255.01/539.72
  6. Step 6: Final answer
    x = 623.02

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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.