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Finding the Fourth Proportional to 1,104.45, 1,656.67 and 525.57

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Solution

The fourth proportional to 1,104.45, 1,656.67 and 525.57 is: 788.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,104.45 : 1,656.67 = 525.57 : x
  2. Step 2: Convert to fraction form
    1,104.45/1,656.67 = 525.57/x
  3. Step 3: Cross multiply
    1,104.45x = 1,656.67 × 525.57
  4. Step 4: Simplify right side
    1,104.45x = 870,696.05
  5. Step 5: Solve for x
    x = 870,696.05/1,104.45
  6. Step 6: Final answer
    x = 788.35

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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.