Home / 1,186.13-1,779.06-320.51

Finding the Fourth Proportional to 1,186.13, 1,779.06 and 320.51

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Solution

The fourth proportional to 1,186.13, 1,779.06 and 320.51 is: 480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.13 : 1,779.06 = 320.51 : x
  2. Step 2: Convert to fraction form
    1,186.13/1,779.06 = 320.51/x
  3. Step 3: Cross multiply
    1,186.13x = 1,779.06 × 320.51
  4. Step 4: Simplify right side
    1,186.13x = 570,206.52
  5. Step 5: Solve for x
    x = 570,206.52/1,186.13
  6. Step 6: Final answer
    x = 480.73

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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.