Home / 1,051.42-1,450.96-631.77

Finding the Fourth Proportional to 1,051.42, 1,450.96 and 631.77

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Solution

The fourth proportional to 1,051.42, 1,450.96 and 631.77 is: 871.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.42 : 1,450.96 = 631.77 : x
  2. Step 2: Convert to fraction form
    1,051.42/1,450.96 = 631.77/x
  3. Step 3: Cross multiply
    1,051.42x = 1,450.96 × 631.77
  4. Step 4: Simplify right side
    1,051.42x = 916,675.88
  5. Step 5: Solve for x
    x = 916,675.88/1,051.42
  6. Step 6: Final answer
    x = 871.85

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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.