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Finding the Fourth Proportional to 1,416.42, 1,955.14 and 968.56

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Solution

The fourth proportional to 1,416.42, 1,955.14 and 968.56 is: 1,336.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.42 : 1,955.14 = 968.56 : x
  2. Step 2: Convert to fraction form
    1,416.42/1,955.14 = 968.56/x
  3. Step 3: Cross multiply
    1,416.42x = 1,955.14 × 968.56
  4. Step 4: Simplify right side
    1,416.42x = 1,893,663.09
  5. Step 5: Solve for x
    x = 1,893,663.09/1,416.42
  6. Step 6: Final answer
    x = 1,336.94

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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.