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Finding the Fourth Proportional to 930.55, 1,285.02 and 599.54

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Solution

The fourth proportional to 930.55, 1,285.02 and 599.54 is: 827.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.55 : 1,285.02 = 599.54 : x
  2. Step 2: Convert to fraction form
    930.55/1,285.02 = 599.54/x
  3. Step 3: Cross multiply
    930.55x = 1,285.02 × 599.54
  4. Step 4: Simplify right side
    930.55x = 770,424.10
  5. Step 5: Solve for x
    x = 770,424.10/930.55
  6. Step 6: Final answer
    x = 827.93

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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.