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Finding the Fourth Proportional to 570.99, 856.48 and 449.34

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Solution

The fourth proportional to 570.99, 856.48 and 449.34 is: 674.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.99 : 856.48 = 449.34 : x
  2. Step 2: Convert to fraction form
    570.99/856.48 = 449.34/x
  3. Step 3: Cross multiply
    570.99x = 856.48 × 449.34
  4. Step 4: Simplify right side
    570.99x = 384,850.72
  5. Step 5: Solve for x
    x = 384,850.72/570.99
  6. Step 6: Final answer
    x = 674.01

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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.