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Finding the Fourth Proportional to 623.23, 928.78 and 604.46

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Solution

The fourth proportional to 623.23, 928.78 and 604.46 is: 900.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.23 : 928.78 = 604.46 : x
  2. Step 2: Convert to fraction form
    623.23/928.78 = 604.46/x
  3. Step 3: Cross multiply
    623.23x = 928.78 × 604.46
  4. Step 4: Simplify right side
    623.23x = 561,407.34
  5. Step 5: Solve for x
    x = 561,407.34/623.23
  6. Step 6: Final answer
    x = 900.81

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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.