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Finding the Fourth Proportional to 614.49, 848.61 and 393.54

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Solution

The fourth proportional to 614.49, 848.61 and 393.54 is: 543.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.49 : 848.61 = 393.54 : x
  2. Step 2: Convert to fraction form
    614.49/848.61 = 393.54/x
  3. Step 3: Cross multiply
    614.49x = 848.61 × 393.54
  4. Step 4: Simplify right side
    614.49x = 333,961.98
  5. Step 5: Solve for x
    x = 333,961.98/614.49
  6. Step 6: Final answer
    x = 543.48

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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.