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Finding the Fourth Proportional to 354.96, 485.58 and 353.52

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Solution

The fourth proportional to 354.96, 485.58 and 353.52 is: 483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.96 : 485.58 = 353.52 : x
  2. Step 2: Convert to fraction form
    354.96/485.58 = 353.52/x
  3. Step 3: Cross multiply
    354.96x = 485.58 × 353.52
  4. Step 4: Simplify right side
    354.96x = 171,662.24
  5. Step 5: Solve for x
    x = 171,662.24/354.96
  6. Step 6: Final answer
    x = 483.61

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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.