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Finding the Fourth Proportional to 270.80, 373.70 and 165.90

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Solution

The fourth proportional to 270.80, 373.70 and 165.90 is: 228.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.80 : 373.70 = 165.90 : x
  2. Step 2: Convert to fraction form
    270.80/373.70 = 165.90/x
  3. Step 3: Cross multiply
    270.80x = 373.70 × 165.90
  4. Step 4: Simplify right side
    270.80x = 61,996.83
  5. Step 5: Solve for x
    x = 61,996.83/270.80
  6. Step 6: Final answer
    x = 228.94

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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.