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Finding the Fourth Proportional to 1,222.88, 1,835.31 and 1,051.58

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Solution

The fourth proportional to 1,222.88, 1,835.31 and 1,051.58 is: 1,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.88 : 1,835.31 = 1,051.58 : x
  2. Step 2: Convert to fraction form
    1,222.88/1,835.31 = 1,051.58/x
  3. Step 3: Cross multiply
    1,222.88x = 1,835.31 × 1,051.58
  4. Step 4: Simplify right side
    1,222.88x = 1,929,975.29
  5. Step 5: Solve for x
    x = 1,929,975.29/1,222.88
  6. Step 6: Final answer
    x = 1,578.22

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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.