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Finding the Fourth Proportional to 674.67, 930.06 and 488.01

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Solution

The fourth proportional to 674.67, 930.06 and 488.01 is: 672.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.67 : 930.06 = 488.01 : x
  2. Step 2: Convert to fraction form
    674.67/930.06 = 488.01/x
  3. Step 3: Cross multiply
    674.67x = 930.06 × 488.01
  4. Step 4: Simplify right side
    674.67x = 453,878.58
  5. Step 5: Solve for x
    x = 453,878.58/674.67
  6. Step 6: Final answer
    x = 672.74

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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.