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Finding the Fourth Proportional to 975.62, 1,348.07 and 767.45

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Solution

The fourth proportional to 975.62, 1,348.07 and 767.45 is: 1,060.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.62 : 1,348.07 = 767.45 : x
  2. Step 2: Convert to fraction form
    975.62/1,348.07 = 767.45/x
  3. Step 3: Cross multiply
    975.62x = 1,348.07 × 767.45
  4. Step 4: Simplify right side
    975.62x = 1,034,575.85
  5. Step 5: Solve for x
    x = 1,034,575.85/975.62
  6. Step 6: Final answer
    x = 1,060.43

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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.