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Finding the Fourth Proportional to 261.36, 360.70 and 144.96

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Solution

The fourth proportional to 261.36, 360.70 and 144.96 is: 200.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.36 : 360.70 = 144.96 : x
  2. Step 2: Convert to fraction form
    261.36/360.70 = 144.96/x
  3. Step 3: Cross multiply
    261.36x = 360.70 × 144.96
  4. Step 4: Simplify right side
    261.36x = 52,287.07
  5. Step 5: Solve for x
    x = 52,287.07/261.36
  6. Step 6: Final answer
    x = 200.06

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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.