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Finding the Fourth Proportional to 1,779.15, 2,669.00 and 854.54

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Solution

The fourth proportional to 1,779.15, 2,669.00 and 854.54 is: 1,281.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.15 : 2,669.00 = 854.54 : x
  2. Step 2: Convert to fraction form
    1,779.15/2,669.00 = 854.54/x
  3. Step 3: Cross multiply
    1,779.15x = 2,669.00 × 854.54
  4. Step 4: Simplify right side
    1,779.15x = 2,280,749.64
  5. Step 5: Solve for x
    x = 2,280,749.64/1,779.15
  6. Step 6: Final answer
    x = 1,281.93

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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.