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Finding the Fourth Proportional to 1,533.11, 2,300.00 and 559.21

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Solution

The fourth proportional to 1,533.11, 2,300.00 and 559.21 is: 838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.11 : 2,300.00 = 559.21 : x
  2. Step 2: Convert to fraction form
    1,533.11/2,300.00 = 559.21/x
  3. Step 3: Cross multiply
    1,533.11x = 2,300.00 × 559.21
  4. Step 4: Simplify right side
    1,533.11x = 1,286,170.80
  5. Step 5: Solve for x
    x = 1,286,170.80/1,533.11
  6. Step 6: Final answer
    x = 838.93

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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.