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Finding the Fourth Proportional to 357.90, 493.80 and 202.62

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Solution

The fourth proportional to 357.90, 493.80 and 202.62 is: 279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.90 : 493.80 = 202.62 : x
  2. Step 2: Convert to fraction form
    357.90/493.80 = 202.62/x
  3. Step 3: Cross multiply
    357.90x = 493.80 × 202.62
  4. Step 4: Simplify right side
    357.90x = 100,053.76
  5. Step 5: Solve for x
    x = 100,053.76/357.90
  6. Step 6: Final answer
    x = 279.56

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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.