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Finding the Fourth Proportional to 495.36, 679.97 and 438.86

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Solution

The fourth proportional to 495.36, 679.97 and 438.86 is: 602.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.36 : 679.97 = 438.86 : x
  2. Step 2: Convert to fraction form
    495.36/679.97 = 438.86/x
  3. Step 3: Cross multiply
    495.36x = 679.97 × 438.86
  4. Step 4: Simplify right side
    495.36x = 298,411.63
  5. Step 5: Solve for x
    x = 298,411.63/495.36
  6. Step 6: Final answer
    x = 602.41

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.