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Finding the Fourth Proportional to 788.50, 1,182.92 and 240.72

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Solution

The fourth proportional to 788.50, 1,182.92 and 240.72 is: 361.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.50 : 1,182.92 = 240.72 : x
  2. Step 2: Convert to fraction form
    788.50/1,182.92 = 240.72/x
  3. Step 3: Cross multiply
    788.50x = 1,182.92 × 240.72
  4. Step 4: Simplify right side
    788.50x = 284,752.50
  5. Step 5: Solve for x
    x = 284,752.50/788.50
  6. Step 6: Final answer
    x = 361.13

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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.