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Finding the Fourth Proportional to 1,283.36, 1,924.92 and 552.80

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Solution

The fourth proportional to 1,283.36, 1,924.92 and 552.80 is: 829.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.36 : 1,924.92 = 552.80 : x
  2. Step 2: Convert to fraction form
    1,283.36/1,924.92 = 552.80/x
  3. Step 3: Cross multiply
    1,283.36x = 1,924.92 × 552.80
  4. Step 4: Simplify right side
    1,283.36x = 1,064,095.78
  5. Step 5: Solve for x
    x = 1,064,095.78/1,283.36
  6. Step 6: Final answer
    x = 829.15

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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.