Home / 1,051.16-1,577.01-320.81

Finding the Fourth Proportional to 1,051.16, 1,577.01 and 320.81

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Solution

The fourth proportional to 1,051.16, 1,577.01 and 320.81 is: 481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.16 : 1,577.01 = 320.81 : x
  2. Step 2: Convert to fraction form
    1,051.16/1,577.01 = 320.81/x
  3. Step 3: Cross multiply
    1,051.16x = 1,577.01 × 320.81
  4. Step 4: Simplify right side
    1,051.16x = 505,920.58
  5. Step 5: Solve for x
    x = 505,920.58/1,051.16
  6. Step 6: Final answer
    x = 481.30

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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.