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Finding the Fourth Proportional to 280.28, 386.70 and 182.10

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Solution

The fourth proportional to 280.28, 386.70 and 182.10 is: 251.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.28 : 386.70 = 182.10 : x
  2. Step 2: Convert to fraction form
    280.28/386.70 = 182.10/x
  3. Step 3: Cross multiply
    280.28x = 386.70 × 182.10
  4. Step 4: Simplify right side
    280.28x = 70,418.07
  5. Step 5: Solve for x
    x = 70,418.07/280.28
  6. Step 6: Final answer
    x = 251.24

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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.