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Finding the Fourth Proportional to 651.89, 898.91 and 494.81

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Solution

The fourth proportional to 651.89, 898.91 and 494.81 is: 682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.89 : 898.91 = 494.81 : x
  2. Step 2: Convert to fraction form
    651.89/898.91 = 494.81/x
  3. Step 3: Cross multiply
    651.89x = 898.91 × 494.81
  4. Step 4: Simplify right side
    651.89x = 444,787.18
  5. Step 5: Solve for x
    x = 444,787.18/651.89
  6. Step 6: Final answer
    x = 682.30

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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.