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Finding the Fourth Proportional to 975.95, 1,346.82 and 627.25

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Solution

The fourth proportional to 975.95, 1,346.82 and 627.25 is: 865.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.95 : 1,346.82 = 627.25 : x
  2. Step 2: Convert to fraction form
    975.95/1,346.82 = 627.25/x
  3. Step 3: Cross multiply
    975.95x = 1,346.82 × 627.25
  4. Step 4: Simplify right side
    975.95x = 844,792.85
  5. Step 5: Solve for x
    x = 844,792.85/975.95
  6. Step 6: Final answer
    x = 865.61

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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.