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Finding the Fourth Proportional to 1,028.32, 1,536.44 and 903.28

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Solution

The fourth proportional to 1,028.32, 1,536.44 and 903.28 is: 1,349.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.32 : 1,536.44 = 903.28 : x
  2. Step 2: Convert to fraction form
    1,028.32/1,536.44 = 903.28/x
  3. Step 3: Cross multiply
    1,028.32x = 1,536.44 × 903.28
  4. Step 4: Simplify right side
    1,028.32x = 1,387,835.52
  5. Step 5: Solve for x
    x = 1,387,835.52/1,028.32
  6. Step 6: Final answer
    x = 1,349.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.