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Finding the Fourth Proportional to 1,099.06, 1,648.79 and 368.64

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Solution

The fourth proportional to 1,099.06, 1,648.79 and 368.64 is: 553.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.06 : 1,648.79 = 368.64 : x
  2. Step 2: Convert to fraction form
    1,099.06/1,648.79 = 368.64/x
  3. Step 3: Cross multiply
    1,099.06x = 1,648.79 × 368.64
  4. Step 4: Simplify right side
    1,099.06x = 607,809.95
  5. Step 5: Solve for x
    x = 607,809.95/1,099.06
  6. Step 6: Final answer
    x = 553.03

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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.