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Finding the Fourth Proportional to 614.10, 921.60 and 383.33

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Solution

The fourth proportional to 614.10, 921.60 and 383.33 is: 575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.10 : 921.60 = 383.33 : x
  2. Step 2: Convert to fraction form
    614.10/921.60 = 383.33/x
  3. Step 3: Cross multiply
    614.10x = 921.60 × 383.33
  4. Step 4: Simplify right side
    614.10x = 353,276.93
  5. Step 5: Solve for x
    x = 353,276.93/614.10
  6. Step 6: Final answer
    x = 575.28

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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.