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Finding the Fourth Proportional to 1,186.10, 1,779.33 and 569.69

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Solution

The fourth proportional to 1,186.10, 1,779.33 and 569.69 is: 854.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.10 : 1,779.33 = 569.69 : x
  2. Step 2: Convert to fraction form
    1,186.10/1,779.33 = 569.69/x
  3. Step 3: Cross multiply
    1,186.10x = 1,779.33 × 569.69
  4. Step 4: Simplify right side
    1,186.10x = 1,013,666.51
  5. Step 5: Solve for x
    x = 1,013,666.51/1,186.10
  6. Step 6: Final answer
    x = 854.62

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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.