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Finding the Fourth Proportional to 1,190.06, 1,785.09 and 368.32

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Solution

The fourth proportional to 1,190.06, 1,785.09 and 368.32 is: 552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.06 : 1,785.09 = 368.32 : x
  2. Step 2: Convert to fraction form
    1,190.06/1,785.09 = 368.32/x
  3. Step 3: Cross multiply
    1,190.06x = 1,785.09 × 368.32
  4. Step 4: Simplify right side
    1,190.06x = 657,475.42
  5. Step 5: Solve for x
    x = 657,475.42/1,190.06
  6. Step 6: Final answer
    x = 552.47

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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.