Home / 1,051.30-1,577.22-320.89

Finding the Fourth Proportional to 1,051.30, 1,577.22 and 320.89

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Solution

The fourth proportional to 1,051.30, 1,577.22 and 320.89 is: 481.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.30 : 1,577.22 = 320.89 : x
  2. Step 2: Convert to fraction form
    1,051.30/1,577.22 = 320.89/x
  3. Step 3: Cross multiply
    1,051.30x = 1,577.22 × 320.89
  4. Step 4: Simplify right side
    1,051.30x = 506,114.13
  5. Step 5: Solve for x
    x = 506,114.13/1,051.30
  6. Step 6: Final answer
    x = 481.42

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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.