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Finding the Fourth Proportional to 279.60, 386.03 and 250.00

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Solution

The fourth proportional to 279.60, 386.03 and 250.00 is: 345.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.60 : 386.03 = 250.00 : x
  2. Step 2: Convert to fraction form
    279.60/386.03 = 250.00/x
  3. Step 3: Cross multiply
    279.60x = 386.03 × 250.00
  4. Step 4: Simplify right side
    279.60x = 96,507.16
  5. Step 5: Solve for x
    x = 96,507.16/279.60
  6. Step 6: Final answer
    x = 345.17

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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.