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Finding the Fourth Proportional to 282.56, 390 and 184.14

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Solution

The fourth proportional to 282.56, 390 and 184.14 is: 254.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.56 : 390 = 184.14 : x
  2. Step 2: Convert to fraction form
    282.56/390 = 184.14/x
  3. Step 3: Cross multiply
    282.56x = 390 × 184.14
  4. Step 4: Simplify right side
    282.56x = 71,814.60
  5. Step 5: Solve for x
    x = 71,814.60/282.56
  6. Step 6: Final answer
    x = 254.16

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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.