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Finding the Fourth Proportional to 1,898.16, 2,846.40 and 665.19

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Solution

The fourth proportional to 1,898.16, 2,846.40 and 665.19 is: 997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.16 : 2,846.40 = 665.19 : x
  2. Step 2: Convert to fraction form
    1,898.16/2,846.40 = 665.19/x
  3. Step 3: Cross multiply
    1,898.16x = 2,846.40 × 665.19
  4. Step 4: Simplify right side
    1,898.16x = 1,893,396.82
  5. Step 5: Solve for x
    x = 1,893,396.82/1,898.16
  6. Step 6: Final answer
    x = 997.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.