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Finding the Fourth Proportional to 495.80, 684.42 and 377.79

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Solution

The fourth proportional to 495.80, 684.42 and 377.79 is: 521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.80 : 684.42 = 377.79 : x
  2. Step 2: Convert to fraction form
    495.80/684.42 = 377.79/x
  3. Step 3: Cross multiply
    495.80x = 684.42 × 377.79
  4. Step 4: Simplify right side
    495.80x = 258,567.03
  5. Step 5: Solve for x
    x = 258,567.03/495.80
  6. Step 6: Final answer
    x = 521.51

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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.