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Finding the Fourth Proportional to 1,104.40, 1,657.05 and 556.74

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Solution

The fourth proportional to 1,104.40, 1,657.05 and 556.74 is: 835.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.40 : 1,657.05 = 556.74 : x
  2. Step 2: Convert to fraction form
    1,104.40/1,657.05 = 556.74/x
  3. Step 3: Cross multiply
    1,104.40x = 1,657.05 × 556.74
  4. Step 4: Simplify right side
    1,104.40x = 922,546.02
  5. Step 5: Solve for x
    x = 922,546.02/1,104.40
  6. Step 6: Final answer
    x = 835.34

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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.