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Finding the Fourth Proportional to 495.37, 684.48 and 355.24

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Solution

The fourth proportional to 495.37, 684.48 and 355.24 is: 490.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.37 : 684.48 = 355.24 : x
  2. Step 2: Convert to fraction form
    495.37/684.48 = 355.24/x
  3. Step 3: Cross multiply
    495.37x = 684.48 × 355.24
  4. Step 4: Simplify right side
    495.37x = 243,154.68
  5. Step 5: Solve for x
    x = 243,154.68/495.37
  6. Step 6: Final answer
    x = 490.85

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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.