Home / 850.05-1,172.25-570.30

Finding the Fourth Proportional to 850.05, 1,172.25 and 570.30

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Solution

The fourth proportional to 850.05, 1,172.25 and 570.30 is: 786.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.05 : 1,172.25 = 570.30 : x
  2. Step 2: Convert to fraction form
    850.05/1,172.25 = 570.30/x
  3. Step 3: Cross multiply
    850.05x = 1,172.25 × 570.30
  4. Step 4: Simplify right side
    850.05x = 668,534.18
  5. Step 5: Solve for x
    x = 668,534.18/850.05
  6. Step 6: Final answer
    x = 786.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.