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Finding the Fourth Proportional to 1,880.85, 2,820.78 and 564.60

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Solution

The fourth proportional to 1,880.85, 2,820.78 and 564.60 is: 846.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880.85 : 2,820.78 = 564.60 : x
  2. Step 2: Convert to fraction form
    1,880.85/2,820.78 = 564.60/x
  3. Step 3: Cross multiply
    1,880.85x = 2,820.78 × 564.60
  4. Step 4: Simplify right side
    1,880.85x = 1,592,612.39
  5. Step 5: Solve for x
    x = 1,592,612.39/1,880.85
  6. Step 6: Final answer
    x = 846.75

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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.