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Finding the Fourth Proportional to 539.51, 744.53 and 353.31

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Solution

The fourth proportional to 539.51, 744.53 and 353.31 is: 487.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.51 : 744.53 = 353.31 : x
  2. Step 2: Convert to fraction form
    539.51/744.53 = 353.31/x
  3. Step 3: Cross multiply
    539.51x = 744.53 × 353.31
  4. Step 4: Simplify right side
    539.51x = 263,048.13
  5. Step 5: Solve for x
    x = 263,048.13/539.51
  6. Step 6: Final answer
    x = 487.57

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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.