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Finding the Fourth Proportional to 488.04, 672.99 and 418.34

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Solution

The fourth proportional to 488.04, 672.99 and 418.34 is: 576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.04 : 672.99 = 418.34 : x
  2. Step 2: Convert to fraction form
    488.04/672.99 = 418.34/x
  3. Step 3: Cross multiply
    488.04x = 672.99 × 418.34
  4. Step 4: Simplify right side
    488.04x = 281,538.64
  5. Step 5: Solve for x
    x = 281,538.64/488.04
  6. Step 6: Final answer
    x = 576.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.