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Finding the Fourth Proportional to 684.29, 1,026.03 and 251.21

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Solution

The fourth proportional to 684.29, 1,026.03 and 251.21 is: 376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.29 : 1,026.03 = 251.21 : x
  2. Step 2: Convert to fraction form
    684.29/1,026.03 = 251.21/x
  3. Step 3: Cross multiply
    684.29x = 1,026.03 × 251.21
  4. Step 4: Simplify right side
    684.29x = 257,749.00
  5. Step 5: Solve for x
    x = 257,749.00/684.29
  6. Step 6: Final answer
    x = 376.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.