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Finding the Fourth Proportional to 1,420.01, 1,959.48 and 799.01

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Solution

The fourth proportional to 1,420.01, 1,959.48 and 799.01 is: 1,102.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420.01 : 1,959.48 = 799.01 : x
  2. Step 2: Convert to fraction form
    1,420.01/1,959.48 = 799.01/x
  3. Step 3: Cross multiply
    1,420.01x = 1,959.48 × 799.01
  4. Step 4: Simplify right side
    1,420.01x = 1,565,634.32
  5. Step 5: Solve for x
    x = 1,565,634.32/1,420.01
  6. Step 6: Final answer
    x = 1,102.56

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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.