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Finding the Fourth Proportional to 1,303.80, 1,798.16 and 949.74

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Solution

The fourth proportional to 1,303.80, 1,798.16 and 949.74 is: 1,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.80 : 1,798.16 = 949.74 : x
  2. Step 2: Convert to fraction form
    1,303.80/1,798.16 = 949.74/x
  3. Step 3: Cross multiply
    1,303.80x = 1,798.16 × 949.74
  4. Step 4: Simplify right side
    1,303.80x = 1,707,784.48
  5. Step 5: Solve for x
    x = 1,707,784.48/1,303.80
  6. Step 6: Final answer
    x = 1,309.85

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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.