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Finding the Fourth Proportional to 205.36, 283.48 and 135.45

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Solution

The fourth proportional to 205.36, 283.48 and 135.45 is: 186.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.36 : 283.48 = 135.45 : x
  2. Step 2: Convert to fraction form
    205.36/283.48 = 135.45/x
  3. Step 3: Cross multiply
    205.36x = 283.48 × 135.45
  4. Step 4: Simplify right side
    205.36x = 38,397.03
  5. Step 5: Solve for x
    x = 38,397.03/205.36
  6. Step 6: Final answer
    x = 186.98

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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.