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Finding the Fourth Proportional to 495.32, 744.68 and 393.88

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Solution

The fourth proportional to 495.32, 744.68 and 393.88 is: 592.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.32 : 744.68 = 393.88 : x
  2. Step 2: Convert to fraction form
    495.32/744.68 = 393.88/x
  3. Step 3: Cross multiply
    495.32x = 744.68 × 393.88
  4. Step 4: Simplify right side
    495.32x = 293,314.56
  5. Step 5: Solve for x
    x = 293,314.56/495.32
  6. Step 6: Final answer
    x = 592.17

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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.