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Finding the Fourth Proportional to 1,026.64, 1,538.61 and 896.30

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Solution

The fourth proportional to 1,026.64, 1,538.61 and 896.30 is: 1,343.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.64 : 1,538.61 = 896.30 : x
  2. Step 2: Convert to fraction form
    1,026.64/1,538.61 = 896.30/x
  3. Step 3: Cross multiply
    1,026.64x = 1,538.61 × 896.30
  4. Step 4: Simplify right side
    1,026.64x = 1,379,064.55
  5. Step 5: Solve for x
    x = 1,379,064.55/1,026.64
  6. Step 6: Final answer
    x = 1,343.29

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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.