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Finding the Fourth Proportional to 535.83, 803.61 and 449.19

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Solution

The fourth proportional to 535.83, 803.61 and 449.19 is: 673.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.83 : 803.61 = 449.19 : x
  2. Step 2: Convert to fraction form
    535.83/803.61 = 449.19/x
  3. Step 3: Cross multiply
    535.83x = 803.61 × 449.19
  4. Step 4: Simplify right side
    535.83x = 360,973.58
  5. Step 5: Solve for x
    x = 360,973.58/535.83
  6. Step 6: Final answer
    x = 673.67

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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.