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Finding the Fourth Proportional to 923.20, 1,384.80 and 795.20

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Solution

The fourth proportional to 923.20, 1,384.80 and 795.20 is: 1,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.20 : 1,384.80 = 795.20 : x
  2. Step 2: Convert to fraction form
    923.20/1,384.80 = 795.20/x
  3. Step 3: Cross multiply
    923.20x = 1,384.80 × 795.20
  4. Step 4: Simplify right side
    923.20x = 1,101,192.96
  5. Step 5: Solve for x
    x = 1,101,192.96/923.20
  6. Step 6: Final answer
    x = 1,192.80

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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.