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Finding the Fourth Proportional to 2,199.76, 3,299.75 and 556.32

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Solution

The fourth proportional to 2,199.76, 3,299.75 and 556.32 is: 834.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.76 : 3,299.75 = 556.32 : x
  2. Step 2: Convert to fraction form
    2,199.76/3,299.75 = 556.32/x
  3. Step 3: Cross multiply
    2,199.76x = 3,299.75 × 556.32
  4. Step 4: Simplify right side
    2,199.76x = 1,835,707.28
  5. Step 5: Solve for x
    x = 1,835,707.28/2,199.76
  6. Step 6: Final answer
    x = 834.50

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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.