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Finding the Fourth Proportional to 702.38, 967.94 and 505.55

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Solution

The fourth proportional to 702.38, 967.94 and 505.55 is: 696.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.38 : 967.94 = 505.55 : x
  2. Step 2: Convert to fraction form
    702.38/967.94 = 505.55/x
  3. Step 3: Cross multiply
    702.38x = 967.94 × 505.55
  4. Step 4: Simplify right side
    702.38x = 489,337.23
  5. Step 5: Solve for x
    x = 489,337.23/702.38
  6. Step 6: Final answer
    x = 696.69

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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.