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Finding the Fourth Proportional to 1,499.36, 2,069.39 and 968.90

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Solution

The fourth proportional to 1,499.36, 2,069.39 and 968.90 is: 1,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,499.36 : 2,069.39 = 968.90 : x
  2. Step 2: Convert to fraction form
    1,499.36/2,069.39 = 968.90/x
  3. Step 3: Cross multiply
    1,499.36x = 2,069.39 × 968.90
  4. Step 4: Simplify right side
    1,499.36x = 2,005,027.13
  5. Step 5: Solve for x
    x = 2,005,027.13/1,499.36
  6. Step 6: Final answer
    x = 1,337.26

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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.