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Finding the Fourth Proportional to 145.00, 200.07 and 85.96

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Solution

The fourth proportional to 145.00, 200.07 and 85.96 is: 118.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.00 : 200.07 = 85.96 : x
  2. Step 2: Convert to fraction form
    145.00/200.07 = 85.96/x
  3. Step 3: Cross multiply
    145.00x = 200.07 × 85.96
  4. Step 4: Simplify right side
    145.00x = 17,198.02
  5. Step 5: Solve for x
    x = 17,198.02/145.00
  6. Step 6: Final answer
    x = 118.61

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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.