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Finding the Fourth Proportional to 266.34, 365.31 and 253.74

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Solution

The fourth proportional to 266.34, 365.31 and 253.74 is: 348.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.34 : 365.31 = 253.74 : x
  2. Step 2: Convert to fraction form
    266.34/365.31 = 253.74/x
  3. Step 3: Cross multiply
    266.34x = 365.31 × 253.74
  4. Step 4: Simplify right side
    266.34x = 92,693.76
  5. Step 5: Solve for x
    x = 92,693.76/266.34
  6. Step 6: Final answer
    x = 348.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.