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Finding the Fourth Proportional to 260.99, 360.01 and 156.01

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Solution

The fourth proportional to 260.99, 360.01 and 156.01 is: 215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.99 : 360.01 = 156.01 : x
  2. Step 2: Convert to fraction form
    260.99/360.01 = 156.01/x
  3. Step 3: Cross multiply
    260.99x = 360.01 × 156.01
  4. Step 4: Simplify right side
    260.99x = 56,162.58
  5. Step 5: Solve for x
    x = 56,162.58/260.99
  6. Step 6: Final answer
    x = 215.19

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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.