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Finding the Fourth Proportional to 949.32, 1,309.50 and 845.64

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Solution

The fourth proportional to 949.32, 1,309.50 and 845.64 is: 1,166.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.32 : 1,309.50 = 845.64 : x
  2. Step 2: Convert to fraction form
    949.32/1,309.50 = 845.64/x
  3. Step 3: Cross multiply
    949.32x = 1,309.50 × 845.64
  4. Step 4: Simplify right side
    949.32x = 1,107,365.58
  5. Step 5: Solve for x
    x = 1,107,365.58/949.32
  6. Step 6: Final answer
    x = 1,166.48

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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.