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Finding the Fourth Proportional to 923.91, 1,384.58 and 717.54

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Solution

The fourth proportional to 923.91, 1,384.58 and 717.54 is: 1,075.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.91 : 1,384.58 = 717.54 : x
  2. Step 2: Convert to fraction form
    923.91/1,384.58 = 717.54/x
  3. Step 3: Cross multiply
    923.91x = 1,384.58 × 717.54
  4. Step 4: Simplify right side
    923.91x = 993,487.95
  5. Step 5: Solve for x
    x = 993,487.95/923.91
  6. Step 6: Final answer
    x = 1,075.31

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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.