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Finding the Fourth Proportional to 941.85, 1,300.30 and 627.56

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Solution

The fourth proportional to 941.85, 1,300.30 and 627.56 is: 866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.85 : 1,300.30 = 627.56 : x
  2. Step 2: Convert to fraction form
    941.85/1,300.30 = 627.56/x
  3. Step 3: Cross multiply
    941.85x = 1,300.30 × 627.56
  4. Step 4: Simplify right side
    941.85x = 816,016.27
  5. Step 5: Solve for x
    x = 816,016.27/941.85
  6. Step 6: Final answer
    x = 866.40

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1.5x scale

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.