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Finding the Fourth Proportional to 1,529.36, 2,110.56 and 908

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Solution

The fourth proportional to 1,529.36, 2,110.56 and 908 is: 1,253.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.36 : 2,110.56 = 908 : x
  2. Step 2: Convert to fraction form
    1,529.36/2,110.56 = 908/x
  3. Step 3: Cross multiply
    1,529.36x = 2,110.56 × 908
  4. Step 4: Simplify right side
    1,529.36x = 1,916,388.48
  5. Step 5: Solve for x
    x = 1,916,388.48/1,529.36
  6. Step 6: Final answer
    x = 1,253.07

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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.