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Finding the Fourth Proportional to 539.51, 744.75 and 393.24

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Solution

The fourth proportional to 539.51, 744.75 and 393.24 is: 542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.51 : 744.75 = 393.24 : x
  2. Step 2: Convert to fraction form
    539.51/744.75 = 393.24/x
  3. Step 3: Cross multiply
    539.51x = 744.75 × 393.24
  4. Step 4: Simplify right side
    539.51x = 292,865.49
  5. Step 5: Solve for x
    x = 292,865.49/539.51
  6. Step 6: Final answer
    x = 542.84

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Double scale
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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.