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Finding the Fourth Proportional to 352.02, 485.78 and 194.63

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Solution

The fourth proportional to 352.02, 485.78 and 194.63 is: 268.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.02 : 485.78 = 194.63 : x
  2. Step 2: Convert to fraction form
    352.02/485.78 = 194.63/x
  3. Step 3: Cross multiply
    352.02x = 485.78 × 194.63
  4. Step 4: Simplify right side
    352.02x = 94,543.96
  5. Step 5: Solve for x
    x = 94,543.96/352.02
  6. Step 6: Final answer
    x = 268.58

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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.