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Finding the Fourth Proportional to 940, 1,296.36 and 608.07

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Solution

The fourth proportional to 940, 1,296.36 and 608.07 is: 838.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    940 : 1,296.36 = 608.07 : x
  2. Step 2: Convert to fraction form
    940/1,296.36 = 608.07/x
  3. Step 3: Cross multiply
    940x = 1,296.36 × 608.07
  4. Step 4: Simplify right side
    940x = 788,277.63
  5. Step 5: Solve for x
    x = 788,277.63/940
  6. Step 6: Final answer
    x = 838.59

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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.