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Finding the Fourth Proportional to 674.62, 1,016.59 and 555.58

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Solution

The fourth proportional to 674.62, 1,016.59 and 555.58 is: 837.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.62 : 1,016.59 = 555.58 : x
  2. Step 2: Convert to fraction form
    674.62/1,016.59 = 555.58/x
  3. Step 3: Cross multiply
    674.62x = 1,016.59 × 555.58
  4. Step 4: Simplify right side
    674.62x = 564,797.07
  5. Step 5: Solve for x
    x = 564,797.07/674.62
  6. Step 6: Final answer
    x = 837.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.