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Finding the Fourth Proportional to 923.10, 1,383.32 and 533.10

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Solution

The fourth proportional to 923.10, 1,383.32 and 533.10 is: 798.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.10 : 1,383.32 = 533.10 : x
  2. Step 2: Convert to fraction form
    923.10/1,383.32 = 533.10/x
  3. Step 3: Cross multiply
    923.10x = 1,383.32 × 533.10
  4. Step 4: Simplify right side
    923.10x = 737,447.89
  5. Step 5: Solve for x
    x = 737,447.89/923.10
  6. Step 6: Final answer
    x = 798.88

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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.