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Finding the Fourth Proportional to 539.72, 744.64 and 373.96

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Solution

The fourth proportional to 539.72, 744.64 and 373.96 is: 515.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.72 : 744.64 = 373.96 : x
  2. Step 2: Convert to fraction form
    539.72/744.64 = 373.96/x
  3. Step 3: Cross multiply
    539.72x = 744.64 × 373.96
  4. Step 4: Simplify right side
    539.72x = 278,465.57
  5. Step 5: Solve for x
    x = 278,465.57/539.72
  6. Step 6: Final answer
    x = 515.94

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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.