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Finding the Fourth Proportional to 283.58, 423.21 and 276.29

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Solution

The fourth proportional to 283.58, 423.21 and 276.29 is: 412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.58 : 423.21 = 276.29 : x
  2. Step 2: Convert to fraction form
    283.58/423.21 = 276.29/x
  3. Step 3: Cross multiply
    283.58x = 423.21 × 276.29
  4. Step 4: Simplify right side
    283.58x = 116,925.19
  5. Step 5: Solve for x
    x = 116,925.19/283.58
  6. Step 6: Final answer
    x = 412.33

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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.