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Finding the Fourth Proportional to 651.03, 898.43 and 356.31

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Solution

The fourth proportional to 651.03, 898.43 and 356.31 is: 491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.03 : 898.43 = 356.31 : x
  2. Step 2: Convert to fraction form
    651.03/898.43 = 356.31/x
  3. Step 3: Cross multiply
    651.03x = 898.43 × 356.31
  4. Step 4: Simplify right side
    651.03x = 320,119.59
  5. Step 5: Solve for x
    x = 320,119.59/651.03
  6. Step 6: Final answer
    x = 491.71

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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.