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Finding the Fourth Proportional to 401.55, 599.39 and 374.19

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Solution

The fourth proportional to 401.55, 599.39 and 374.19 is: 558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.55 : 599.39 = 374.19 : x
  2. Step 2: Convert to fraction form
    401.55/599.39 = 374.19/x
  3. Step 3: Cross multiply
    401.55x = 599.39 × 374.19
  4. Step 4: Simplify right side
    401.55x = 224,283.87
  5. Step 5: Solve for x
    x = 224,283.87/401.55
  6. Step 6: Final answer
    x = 558.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.