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Finding the Fourth Proportional to 928.58, 1,392.69 and 466.23

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Solution

The fourth proportional to 928.58, 1,392.69 and 466.23 is: 699.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.58 : 1,392.69 = 466.23 : x
  2. Step 2: Convert to fraction form
    928.58/1,392.69 = 466.23/x
  3. Step 3: Cross multiply
    928.58x = 1,392.69 × 466.23
  4. Step 4: Simplify right side
    928.58x = 649,313.86
  5. Step 5: Solve for x
    x = 649,313.86/928.58
  6. Step 6: Final answer
    x = 699.26

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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.