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Finding the Fourth Proportional to 495.19, 684.04 and 371.79

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Solution

The fourth proportional to 495.19, 684.04 and 371.79 is: 513.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.19 : 684.04 = 371.79 : x
  2. Step 2: Convert to fraction form
    495.19/684.04 = 371.79/x
  3. Step 3: Cross multiply
    495.19x = 684.04 × 371.79
  4. Step 4: Simplify right side
    495.19x = 254,317.56
  5. Step 5: Solve for x
    x = 254,317.56/495.19
  6. Step 6: Final answer
    x = 513.57

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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.