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Finding the Fourth Proportional to 614.59, 847.46 and 393.46

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Solution

The fourth proportional to 614.59, 847.46 and 393.46 is: 542.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.59 : 847.46 = 393.46 : x
  2. Step 2: Convert to fraction form
    614.59/847.46 = 393.46/x
  3. Step 3: Cross multiply
    614.59x = 847.46 × 393.46
  4. Step 4: Simplify right side
    614.59x = 333,440.48
  5. Step 5: Solve for x
    x = 333,440.48/614.59
  6. Step 6: Final answer
    x = 542.54

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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.