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Finding the Fourth Proportional to 282.23, 389.33 and 188.98

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Solution

The fourth proportional to 282.23, 389.33 and 188.98 is: 260.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.23 : 389.33 = 188.98 : x
  2. Step 2: Convert to fraction form
    282.23/389.33 = 188.98/x
  3. Step 3: Cross multiply
    282.23x = 389.33 × 188.98
  4. Step 4: Simplify right side
    282.23x = 73,573.67
  5. Step 5: Solve for x
    x = 73,573.67/282.23
  6. Step 6: Final answer
    x = 260.69

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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.