Home / 1,176.89-1,766.57-561.11

Finding the Fourth Proportional to 1,176.89, 1,766.57 and 561.11

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Solution

The fourth proportional to 1,176.89, 1,766.57 and 561.11 is: 842.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.89 : 1,766.57 = 561.11 : x
  2. Step 2: Convert to fraction form
    1,176.89/1,766.57 = 561.11/x
  3. Step 3: Cross multiply
    1,176.89x = 1,766.57 × 561.11
  4. Step 4: Simplify right side
    1,176.89x = 991,228.45
  5. Step 5: Solve for x
    x = 991,228.45/1,176.89
  6. Step 6: Final answer
    x = 842.25

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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.