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Finding the Fourth Proportional to 448.69, 672.35 and 188.55

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Solution

The fourth proportional to 448.69, 672.35 and 188.55 is: 282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.69 : 672.35 = 188.55 : x
  2. Step 2: Convert to fraction form
    448.69/672.35 = 188.55/x
  3. Step 3: Cross multiply
    448.69x = 672.35 × 188.55
  4. Step 4: Simplify right side
    448.69x = 126,771.71
  5. Step 5: Solve for x
    x = 126,771.71/448.69
  6. Step 6: Final answer
    x = 282.54

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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.