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Finding the Fourth Proportional to 205.00, 282.77 and 149.67

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Solution

The fourth proportional to 205.00, 282.77 and 149.67 is: 206.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.00 : 282.77 = 149.67 : x
  2. Step 2: Convert to fraction form
    205.00/282.77 = 149.67/x
  3. Step 3: Cross multiply
    205.00x = 282.77 × 149.67
  4. Step 4: Simplify right side
    205.00x = 42,320.77
  5. Step 5: Solve for x
    x = 42,320.77/205.00
  6. Step 6: Final answer
    x = 206.45

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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.