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Finding the Fourth Proportional to 260.16, 358.50 and 211.08

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Solution

The fourth proportional to 260.16, 358.50 and 211.08 is: 290.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.16 : 358.50 = 211.08 : x
  2. Step 2: Convert to fraction form
    260.16/358.50 = 211.08/x
  3. Step 3: Cross multiply
    260.16x = 358.50 × 211.08
  4. Step 4: Simplify right side
    260.16x = 75,672.18
  5. Step 5: Solve for x
    x = 75,672.18/260.16
  6. Step 6: Final answer
    x = 290.87

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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.