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Finding the Fourth Proportional to 651.22, 898.65 and 356.43

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Solution

The fourth proportional to 651.22, 898.65 and 356.43 is: 491.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.22 : 898.65 = 356.43 : x
  2. Step 2: Convert to fraction form
    651.22/898.65 = 356.43/x
  3. Step 3: Cross multiply
    651.22x = 898.65 × 356.43
  4. Step 4: Simplify right side
    651.22x = 320,305.66
  5. Step 5: Solve for x
    x = 320,305.66/651.22
  6. Step 6: Final answer
    x = 491.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.