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Finding the Fourth Proportional to 1,214.06, 1,818.99 and 955.71

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Solution

The fourth proportional to 1,214.06, 1,818.99 and 955.71 is: 1,431.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.06 : 1,818.99 = 955.71 : x
  2. Step 2: Convert to fraction form
    1,214.06/1,818.99 = 955.71/x
  3. Step 3: Cross multiply
    1,214.06x = 1,818.99 × 955.71
  4. Step 4: Simplify right side
    1,214.06x = 1,738,426.93
  5. Step 5: Solve for x
    x = 1,738,426.93/1,214.06
  6. Step 6: Final answer
    x = 1,431.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.