Home / 1,051.11-1,450.41-631.50

Finding the Fourth Proportional to 1,051.11, 1,450.41 and 631.50

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Solution

The fourth proportional to 1,051.11, 1,450.41 and 631.50 is: 871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.11 : 1,450.41 = 631.50 : x
  2. Step 2: Convert to fraction form
    1,051.11/1,450.41 = 631.50/x
  3. Step 3: Cross multiply
    1,051.11x = 1,450.41 × 631.50
  4. Step 4: Simplify right side
    1,051.11x = 915,926.11
  5. Step 5: Solve for x
    x = 915,926.11/1,051.11
  6. Step 6: Final answer
    x = 871.39

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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.