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Finding the Fourth Proportional to 357.95, 493.94 and 200.60

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Solution

The fourth proportional to 357.95, 493.94 and 200.60 is: 276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.95 : 493.94 = 200.60 : x
  2. Step 2: Convert to fraction form
    357.95/493.94 = 200.60/x
  3. Step 3: Cross multiply
    357.95x = 493.94 × 200.60
  4. Step 4: Simplify right side
    357.95x = 99,084.36
  5. Step 5: Solve for x
    x = 99,084.36/357.95
  6. Step 6: Final answer
    x = 276.81

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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.