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Finding the Fourth Proportional to 614.44, 847.59 and 389.96

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Solution

The fourth proportional to 614.44, 847.59 and 389.96 is: 537.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.44 : 847.59 = 389.96 : x
  2. Step 2: Convert to fraction form
    614.44/847.59 = 389.96/x
  3. Step 3: Cross multiply
    614.44x = 847.59 × 389.96
  4. Step 4: Simplify right side
    614.44x = 330,526.20
  5. Step 5: Solve for x
    x = 330,526.20/614.44
  6. Step 6: Final answer
    x = 537.93

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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.