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Finding the Fourth Proportional to 1,106.06, 1,659.90 and 558.50

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Solution

The fourth proportional to 1,106.06, 1,659.90 and 558.50 is: 838.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.06 : 1,659.90 = 558.50 : x
  2. Step 2: Convert to fraction form
    1,106.06/1,659.90 = 558.50/x
  3. Step 3: Cross multiply
    1,106.06x = 1,659.90 × 558.50
  4. Step 4: Simplify right side
    1,106.06x = 927,054.15
  5. Step 5: Solve for x
    x = 927,054.15/1,106.06
  6. Step 6: Final answer
    x = 838.16

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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.