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Finding the Fourth Proportional to 496.91, 744.59 and 393.93

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Solution

The fourth proportional to 496.91, 744.59 and 393.93 is: 590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.91 : 744.59 = 393.93 : x
  2. Step 2: Convert to fraction form
    496.91/744.59 = 393.93/x
  3. Step 3: Cross multiply
    496.91x = 744.59 × 393.93
  4. Step 4: Simplify right side
    496.91x = 293,317.32
  5. Step 5: Solve for x
    x = 293,317.32/496.91
  6. Step 6: Final answer
    x = 590.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.