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Finding the Fourth Proportional to 230.77, 346.16 and 66.25

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Solution

The fourth proportional to 230.77, 346.16 and 66.25 is: 99.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.77 : 346.16 = 66.25 : x
  2. Step 2: Convert to fraction form
    230.77/346.16 = 66.25/x
  3. Step 3: Cross multiply
    230.77x = 346.16 × 66.25
  4. Step 4: Simplify right side
    230.77x = 22,933.10
  5. Step 5: Solve for x
    x = 22,933.10/230.77
  6. Step 6: Final answer
    x = 99.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.