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Finding the Fourth Proportional to 448.76, 673.88 and 303.45

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Solution

The fourth proportional to 448.76, 673.88 and 303.45 is: 455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.76 : 673.88 = 303.45 : x
  2. Step 2: Convert to fraction form
    448.76/673.88 = 303.45/x
  3. Step 3: Cross multiply
    448.76x = 673.88 × 303.45
  4. Step 4: Simplify right side
    448.76x = 204,488.89
  5. Step 5: Solve for x
    x = 204,488.89/448.76
  6. Step 6: Final answer
    x = 455.68

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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.