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Finding the Fourth Proportional to 448.75, 673.03 and 253.62

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Solution

The fourth proportional to 448.75, 673.03 and 253.62 is: 380.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.75 : 673.03 = 253.62 : x
  2. Step 2: Convert to fraction form
    448.75/673.03 = 253.62/x
  3. Step 3: Cross multiply
    448.75x = 673.03 × 253.62
  4. Step 4: Simplify right side
    448.75x = 170,693.87
  5. Step 5: Solve for x
    x = 170,693.87/448.75
  6. Step 6: Final answer
    x = 380.38

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Double scale
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Similar ratio
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1.5x scale

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.