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Finding the Fourth Proportional to 930.56, 1,284.34 and 599.40

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Solution

The fourth proportional to 930.56, 1,284.34 and 599.40 is: 827.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    930.56 : 1,284.34 = 599.40 : x
  2. Step 2: Convert to fraction form
    930.56/1,284.34 = 599.40/x
  3. Step 3: Cross multiply
    930.56x = 1,284.34 × 599.40
  4. Step 4: Simplify right side
    930.56x = 769,833.40
  5. Step 5: Solve for x
    x = 769,833.40/930.56
  6. Step 6: Final answer
    x = 827.28

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1.5x scale

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.