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Finding the Fourth Proportional to 188.84, 260.35 and 144.63

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Solution

The fourth proportional to 188.84, 260.35 and 144.63 is: 199.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.84 : 260.35 = 144.63 : x
  2. Step 2: Convert to fraction form
    188.84/260.35 = 144.63/x
  3. Step 3: Cross multiply
    188.84x = 260.35 × 144.63
  4. Step 4: Simplify right side
    188.84x = 37,653.70
  5. Step 5: Solve for x
    x = 37,653.70/188.84
  6. Step 6: Final answer
    x = 199.40

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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.