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Finding the Fourth Proportional to 202.34, 278.58 and 193.46

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Solution

The fourth proportional to 202.34, 278.58 and 193.46 is: 266.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.34 : 278.58 = 193.46 : x
  2. Step 2: Convert to fraction form
    202.34/278.58 = 193.46/x
  3. Step 3: Cross multiply
    202.34x = 278.58 × 193.46
  4. Step 4: Simplify right side
    202.34x = 53,894.09
  5. Step 5: Solve for x
    x = 53,894.09/202.34
  6. Step 6: Final answer
    x = 266.35

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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.