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Finding the Fourth Proportional to 706.58, 1,060.28 and 381.94

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Solution

The fourth proportional to 706.58, 1,060.28 and 381.94 is: 573.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.58 : 1,060.28 = 381.94 : x
  2. Step 2: Convert to fraction form
    706.58/1,060.28 = 381.94/x
  3. Step 3: Cross multiply
    706.58x = 1,060.28 × 381.94
  4. Step 4: Simplify right side
    706.58x = 404,963.34
  5. Step 5: Solve for x
    x = 404,963.34/706.58
  6. Step 6: Final answer
    x = 573.13

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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.