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Finding the Fourth Proportional to 923.02, 1,384.14 and 306.56

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Solution

The fourth proportional to 923.02, 1,384.14 and 306.56 is: 459.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.02 : 1,384.14 = 306.56 : x
  2. Step 2: Convert to fraction form
    923.02/1,384.14 = 306.56/x
  3. Step 3: Cross multiply
    923.02x = 1,384.14 × 306.56
  4. Step 4: Simplify right side
    923.02x = 424,321.96
  5. Step 5: Solve for x
    x = 424,321.96/923.02
  6. Step 6: Final answer
    x = 459.71

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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.