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Finding the Fourth Proportional to 922.48, 1,383.74 and 374.56

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Solution

The fourth proportional to 922.48, 1,383.74 and 374.56 is: 561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.48 : 1,383.74 = 374.56 : x
  2. Step 2: Convert to fraction form
    922.48/1,383.74 = 374.56/x
  3. Step 3: Cross multiply
    922.48x = 1,383.74 × 374.56
  4. Step 4: Simplify right side
    922.48x = 518,293.65
  5. Step 5: Solve for x
    x = 518,293.65/922.48
  6. Step 6: Final answer
    x = 561.85

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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.