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Finding the Fourth Proportional to 1,394.08, 2,090.64 and 700.48

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Solution

The fourth proportional to 1,394.08, 2,090.64 and 700.48 is: 1,050.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.08 : 2,090.64 = 700.48 : x
  2. Step 2: Convert to fraction form
    1,394.08/2,090.64 = 700.48/x
  3. Step 3: Cross multiply
    1,394.08x = 2,090.64 × 700.48
  4. Step 4: Simplify right side
    1,394.08x = 1,464,451.51
  5. Step 5: Solve for x
    x = 1,464,451.51/1,394.08
  6. Step 6: Final answer
    x = 1,050.48

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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.