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Finding the Fourth Proportional to 390.00, 537.96 and 250.07

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Solution

The fourth proportional to 390.00, 537.96 and 250.07 is: 344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    390.00 : 537.96 = 250.07 : x
  2. Step 2: Convert to fraction form
    390.00/537.96 = 250.07/x
  3. Step 3: Cross multiply
    390.00x = 537.96 × 250.07
  4. Step 4: Simplify right side
    390.00x = 134,523.72
  5. Step 5: Solve for x
    x = 134,523.72/390.00
  6. Step 6: Final answer
    x = 344.94

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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.