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Finding the Fourth Proportional to 700.57, 1,049.94 and 289.16

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Solution

The fourth proportional to 700.57, 1,049.94 and 289.16 is: 433.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.57 : 1,049.94 = 289.16 : x
  2. Step 2: Convert to fraction form
    700.57/1,049.94 = 289.16/x
  3. Step 3: Cross multiply
    700.57x = 1,049.94 × 289.16
  4. Step 4: Simplify right side
    700.57x = 303,600.65
  5. Step 5: Solve for x
    x = 303,600.65/700.57
  6. Step 6: Final answer
    x = 433.36

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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.