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Finding the Fourth Proportional to 260.93, 393.64 and 248.11

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Solution

The fourth proportional to 260.93, 393.64 and 248.11 is: 374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.93 : 393.64 = 248.11 : x
  2. Step 2: Convert to fraction form
    260.93/393.64 = 248.11/x
  3. Step 3: Cross multiply
    260.93x = 393.64 × 248.11
  4. Step 4: Simplify right side
    260.93x = 97,666.02
  5. Step 5: Solve for x
    x = 97,666.02/260.93
  6. Step 6: Final answer
    x = 374.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.