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Finding the Fourth Proportional to 270.75, 374.31 and 259.29

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Solution

The fourth proportional to 270.75, 374.31 and 259.29 is: 358.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.75 : 374.31 = 259.29 : x
  2. Step 2: Convert to fraction form
    270.75/374.31 = 259.29/x
  3. Step 3: Cross multiply
    270.75x = 374.31 × 259.29
  4. Step 4: Simplify right side
    270.75x = 97,054.84
  5. Step 5: Solve for x
    x = 97,054.84/270.75
  6. Step 6: Final answer
    x = 358.47

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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.