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Finding the Fourth Proportional to 1,410.66, 1,944.63 and 913.17

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Solution

The fourth proportional to 1,410.66, 1,944.63 and 913.17 is: 1,258.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,410.66 : 1,944.63 = 913.17 : x
  2. Step 2: Convert to fraction form
    1,410.66/1,944.63 = 913.17/x
  3. Step 3: Cross multiply
    1,410.66x = 1,944.63 × 913.17
  4. Step 4: Simplify right side
    1,410.66x = 1,775,777.78
  5. Step 5: Solve for x
    x = 1,775,777.78/1,410.66
  6. Step 6: Final answer
    x = 1,258.83

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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.