Home / 1,186.02-1,779.12-320.34

Finding the Fourth Proportional to 1,186.02, 1,779.12 and 320.34

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Solution

The fourth proportional to 1,186.02, 1,779.12 and 320.34 is: 480.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.02 : 1,779.12 = 320.34 : x
  2. Step 2: Convert to fraction form
    1,186.02/1,779.12 = 320.34/x
  3. Step 3: Cross multiply
    1,186.02x = 1,779.12 × 320.34
  4. Step 4: Simplify right side
    1,186.02x = 569,923.30
  5. Step 5: Solve for x
    x = 569,923.30/1,186.02
  6. Step 6: Final answer
    x = 480.53

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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.