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Finding the Fourth Proportional to 614.04, 847.38 and 381.08

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Solution

The fourth proportional to 614.04, 847.38 and 381.08 is: 525.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.04 : 847.38 = 381.08 : x
  2. Step 2: Convert to fraction form
    614.04/847.38 = 381.08/x
  3. Step 3: Cross multiply
    614.04x = 847.38 × 381.08
  4. Step 4: Simplify right side
    614.04x = 322,919.57
  5. Step 5: Solve for x
    x = 322,919.57/614.04
  6. Step 6: Final answer
    x = 525.89

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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.