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Finding the Fourth Proportional to 423.58, 581.37 and 375.89

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Solution

The fourth proportional to 423.58, 581.37 and 375.89 is: 515.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.58 : 581.37 = 375.89 : x
  2. Step 2: Convert to fraction form
    423.58/581.37 = 375.89/x
  3. Step 3: Cross multiply
    423.58x = 581.37 × 375.89
  4. Step 4: Simplify right side
    423.58x = 218,531.17
  5. Step 5: Solve for x
    x = 218,531.17/423.58
  6. Step 6: Final answer
    x = 515.91

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.