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Finding the Fourth Proportional to 788.62, 1,182.93 and 240.79

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Solution

The fourth proportional to 788.62, 1,182.93 and 240.79 is: 361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.62 : 1,182.93 = 240.79 : x
  2. Step 2: Convert to fraction form
    788.62/1,182.93 = 240.79/x
  3. Step 3: Cross multiply
    788.62x = 1,182.93 × 240.79
  4. Step 4: Simplify right side
    788.62x = 284,837.71
  5. Step 5: Solve for x
    x = 284,837.71/788.62
  6. Step 6: Final answer
    x = 361.19

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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.