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Finding the Fourth Proportional to 614.38, 847.58 and 393.26

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Solution

The fourth proportional to 614.38, 847.58 and 393.26 is: 542.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.38 : 847.58 = 393.26 : x
  2. Step 2: Convert to fraction form
    614.38/847.58 = 393.26/x
  3. Step 3: Cross multiply
    614.38x = 847.58 × 393.26
  4. Step 4: Simplify right side
    614.38x = 333,319.31
  5. Step 5: Solve for x
    x = 333,319.31/614.38
  6. Step 6: Final answer
    x = 542.53

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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.