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Finding the Fourth Proportional to 1,140.32, 1,708.32 and 563.60

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Solution

The fourth proportional to 1,140.32, 1,708.32 and 563.60 is: 844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140.32 : 1,708.32 = 563.60 : x
  2. Step 2: Convert to fraction form
    1,140.32/1,708.32 = 563.60/x
  3. Step 3: Cross multiply
    1,140.32x = 1,708.32 × 563.60
  4. Step 4: Simplify right side
    1,140.32x = 962,809.15
  5. Step 5: Solve for x
    x = 962,809.15/1,140.32
  6. Step 6: Final answer
    x = 844.33

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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.