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Finding the Fourth Proportional to 1,788.15, 2,682.36 and 555.65

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Solution

The fourth proportional to 1,788.15, 2,682.36 and 555.65 is: 833.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.15 : 2,682.36 = 555.65 : x
  2. Step 2: Convert to fraction form
    1,788.15/2,682.36 = 555.65/x
  3. Step 3: Cross multiply
    1,788.15x = 2,682.36 × 555.65
  4. Step 4: Simplify right side
    1,788.15x = 1,490,453.33
  5. Step 5: Solve for x
    x = 1,490,453.33/1,788.15
  6. Step 6: Final answer
    x = 833.52

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1.5x scale

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.