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Finding the Fourth Proportional to 1,779.96, 2,669.96 and 547.36

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Solution

The fourth proportional to 1,779.96, 2,669.96 and 547.36 is: 821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.96 : 2,669.96 = 547.36 : x
  2. Step 2: Convert to fraction form
    1,779.96/2,669.96 = 547.36/x
  3. Step 3: Cross multiply
    1,779.96x = 2,669.96 × 547.36
  4. Step 4: Simplify right side
    1,779.96x = 1,461,429.31
  5. Step 5: Solve for x
    x = 1,461,429.31/1,779.96
  6. Step 6: Final answer
    x = 821.05

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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.