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Finding the Fourth Proportional to 260.31, 358.70 and 186.51

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Solution

The fourth proportional to 260.31, 358.70 and 186.51 is: 257.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.31 : 358.70 = 186.51 : x
  2. Step 2: Convert to fraction form
    260.31/358.70 = 186.51/x
  3. Step 3: Cross multiply
    260.31x = 358.70 × 186.51
  4. Step 4: Simplify right side
    260.31x = 66,901.14
  5. Step 5: Solve for x
    x = 66,901.14/260.31
  6. Step 6: Final answer
    x = 257.01

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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.