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Finding the Fourth Proportional to 1,367.32, 2,051.64 and 790.24

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Solution

The fourth proportional to 1,367.32, 2,051.64 and 790.24 is: 1,185.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.32 : 2,051.64 = 790.24 : x
  2. Step 2: Convert to fraction form
    1,367.32/2,051.64 = 790.24/x
  3. Step 3: Cross multiply
    1,367.32x = 2,051.64 × 790.24
  4. Step 4: Simplify right side
    1,367.32x = 1,621,287.99
  5. Step 5: Solve for x
    x = 1,621,287.99/1,367.32
  6. Step 6: Final answer
    x = 1,185.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.