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Finding the Fourth Proportional to 1,067.85, 1,594.65 and 1,056.40

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Solution

The fourth proportional to 1,067.85, 1,594.65 and 1,056.40 is: 1,577.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.85 : 1,594.65 = 1,056.40 : x
  2. Step 2: Convert to fraction form
    1,067.85/1,594.65 = 1,056.40/x
  3. Step 3: Cross multiply
    1,067.85x = 1,594.65 × 1,056.40
  4. Step 4: Simplify right side
    1,067.85x = 1,684,588.26
  5. Step 5: Solve for x
    x = 1,684,588.26/1,067.85
  6. Step 6: Final answer
    x = 1,577.56

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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.