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Finding the Fourth Proportional to 448.76, 672.72 and 243.02

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Solution

The fourth proportional to 448.76, 672.72 and 243.02 is: 364.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.76 : 672.72 = 243.02 : x
  2. Step 2: Convert to fraction form
    448.76/672.72 = 243.02/x
  3. Step 3: Cross multiply
    448.76x = 672.72 × 243.02
  4. Step 4: Simplify right side
    448.76x = 163,484.41
  5. Step 5: Solve for x
    x = 163,484.41/448.76
  6. Step 6: Final answer
    x = 364.30

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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.