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Finding the Fourth Proportional to 260.28, 359.28 and 156.84

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Solution

The fourth proportional to 260.28, 359.28 and 156.84 is: 216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.28 : 359.28 = 156.84 : x
  2. Step 2: Convert to fraction form
    260.28/359.28 = 156.84/x
  3. Step 3: Cross multiply
    260.28x = 359.28 × 156.84
  4. Step 4: Simplify right side
    260.28x = 56,349.48
  5. Step 5: Solve for x
    x = 56,349.48/260.28
  6. Step 6: Final answer
    x = 216.50

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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.