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Finding the Fourth Proportional to 448.78, 672.90 and 294.52

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Solution

The fourth proportional to 448.78, 672.90 and 294.52 is: 441.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.78 : 672.90 = 294.52 : x
  2. Step 2: Convert to fraction form
    448.78/672.90 = 294.52/x
  3. Step 3: Cross multiply
    448.78x = 672.90 × 294.52
  4. Step 4: Simplify right side
    448.78x = 198,182.51
  5. Step 5: Solve for x
    x = 198,182.51/448.78
  6. Step 6: Final answer
    x = 441.60

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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.