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Finding the Fourth Proportional to 1,779.78, 2,669.12 and 625.26

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Solution

The fourth proportional to 1,779.78, 2,669.12 and 625.26 is: 937.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.78 : 2,669.12 = 625.26 : x
  2. Step 2: Convert to fraction form
    1,779.78/2,669.12 = 625.26/x
  3. Step 3: Cross multiply
    1,779.78x = 2,669.12 × 625.26
  4. Step 4: Simplify right side
    1,779.78x = 1,668,893.97
  5. Step 5: Solve for x
    x = 1,668,893.97/1,779.78
  6. Step 6: Final answer
    x = 937.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.