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Finding the Fourth Proportional to 1,350, 1,860.48 and 1,245.42

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Solution

The fourth proportional to 1,350, 1,860.48 and 1,245.42 is: 1,716.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350 : 1,860.48 = 1,245.42 : x
  2. Step 2: Convert to fraction form
    1,350/1,860.48 = 1,245.42/x
  3. Step 3: Cross multiply
    1,350x = 1,860.48 × 1,245.42
  4. Step 4: Simplify right side
    1,350x = 2,317,079.00
  5. Step 5: Solve for x
    x = 2,317,079.00/1,350
  6. Step 6: Final answer
    x = 1,716.35

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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.