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Finding the Fourth Proportional to 357.60, 493.41 and 202.35

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Solution

The fourth proportional to 357.60, 493.41 and 202.35 is: 279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.60 : 493.41 = 202.35 : x
  2. Step 2: Convert to fraction form
    357.60/493.41 = 202.35/x
  3. Step 3: Cross multiply
    357.60x = 493.41 × 202.35
  4. Step 4: Simplify right side
    357.60x = 99,841.51
  5. Step 5: Solve for x
    x = 99,841.51/357.60
  6. Step 6: Final answer
    x = 279.20

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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.