Home / 1,191.18-1,787.23-369.74

Finding the Fourth Proportional to 1,191.18, 1,787.23 and 369.74

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Solution

The fourth proportional to 1,191.18, 1,787.23 and 369.74 is: 554.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.18 : 1,787.23 = 369.74 : x
  2. Step 2: Convert to fraction form
    1,191.18/1,787.23 = 369.74/x
  3. Step 3: Cross multiply
    1,191.18x = 1,787.23 × 369.74
  4. Step 4: Simplify right side
    1,191.18x = 660,810.42
  5. Step 5: Solve for x
    x = 660,810.42/1,191.18
  6. Step 6: Final answer
    x = 554.75

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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.