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Finding the Fourth Proportional to 651.09, 898.34 and 385.46

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Solution

The fourth proportional to 651.09, 898.34 and 385.46 is: 531.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.09 : 898.34 = 385.46 : x
  2. Step 2: Convert to fraction form
    651.09/898.34 = 385.46/x
  3. Step 3: Cross multiply
    651.09x = 898.34 × 385.46
  4. Step 4: Simplify right side
    651.09x = 346,273.25
  5. Step 5: Solve for x
    x = 346,273.25/651.09
  6. Step 6: Final answer
    x = 531.84

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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.