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Finding the Fourth Proportional to 618.76, 923.09 and 570.16

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Solution

The fourth proportional to 618.76, 923.09 and 570.16 is: 850.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.76 : 923.09 = 570.16 : x
  2. Step 2: Convert to fraction form
    618.76/923.09 = 570.16/x
  3. Step 3: Cross multiply
    618.76x = 923.09 × 570.16
  4. Step 4: Simplify right side
    618.76x = 526,308.99
  5. Step 5: Solve for x
    x = 526,308.99/618.76
  6. Step 6: Final answer
    x = 850.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.