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Finding the Fourth Proportional to 260.34, 358.95 and 186.63

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Solution

The fourth proportional to 260.34, 358.95 and 186.63 is: 257.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.34 : 358.95 = 186.63 : x
  2. Step 2: Convert to fraction form
    260.34/358.95 = 186.63/x
  3. Step 3: Cross multiply
    260.34x = 358.95 × 186.63
  4. Step 4: Simplify right side
    260.34x = 66,990.84
  5. Step 5: Solve for x
    x = 66,990.84/260.34
  6. Step 6: Final answer
    x = 257.32

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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.