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Finding the Fourth Proportional to 143.37, 214.26 and 104.93

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Solution

The fourth proportional to 143.37, 214.26 and 104.93 is: 156.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.37 : 214.26 = 104.93 : x
  2. Step 2: Convert to fraction form
    143.37/214.26 = 104.93/x
  3. Step 3: Cross multiply
    143.37x = 214.26 × 104.93
  4. Step 4: Simplify right side
    143.37x = 22,482.30
  5. Step 5: Solve for x
    x = 22,482.30/143.37
  6. Step 6: Final answer
    x = 156.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.