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Finding the Fourth Proportional to 1,283.53, 1,924.69 and 552.81

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Solution

The fourth proportional to 1,283.53, 1,924.69 and 552.81 is: 828.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.53 : 1,924.69 = 552.81 : x
  2. Step 2: Convert to fraction form
    1,283.53/1,924.69 = 552.81/x
  3. Step 3: Cross multiply
    1,283.53x = 1,924.69 × 552.81
  4. Step 4: Simplify right side
    1,283.53x = 1,063,987.88
  5. Step 5: Solve for x
    x = 1,063,987.88/1,283.53
  6. Step 6: Final answer
    x = 828.95

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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.