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Finding the Fourth Proportional to 423.58, 632.58 and 361.21

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Solution

The fourth proportional to 423.58, 632.58 and 361.21 is: 539.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.58 : 632.58 = 361.21 : x
  2. Step 2: Convert to fraction form
    423.58/632.58 = 361.21/x
  3. Step 3: Cross multiply
    423.58x = 632.58 × 361.21
  4. Step 4: Simplify right side
    423.58x = 228,494.22
  5. Step 5: Solve for x
    x = 228,494.22/423.58
  6. Step 6: Final answer
    x = 539.44

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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.