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Finding the Fourth Proportional to 282.89, 390.14 and 184.68

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Solution

The fourth proportional to 282.89, 390.14 and 184.68 is: 254.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    282.89 : 390.14 = 184.68 : x
  2. Step 2: Convert to fraction form
    282.89/390.14 = 184.68/x
  3. Step 3: Cross multiply
    282.89x = 390.14 × 184.68
  4. Step 4: Simplify right side
    282.89x = 72,051.06
  5. Step 5: Solve for x
    x = 72,051.06/282.89
  6. Step 6: Final answer
    x = 254.70

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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.