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Finding the Fourth Proportional to 283.19, 424.52 and 191.66

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Solution

The fourth proportional to 283.19, 424.52 and 191.66 is: 287.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.19 : 424.52 = 191.66 : x
  2. Step 2: Convert to fraction form
    283.19/424.52 = 191.66/x
  3. Step 3: Cross multiply
    283.19x = 424.52 × 191.66
  4. Step 4: Simplify right side
    283.19x = 81,362.54
  5. Step 5: Solve for x
    x = 81,362.54/283.19
  6. Step 6: Final answer
    x = 287.31

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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.