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Finding the Fourth Proportional to 419.90, 577.98 and 364.41

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Solution

The fourth proportional to 419.90, 577.98 and 364.41 is: 501.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.90 : 577.98 = 364.41 : x
  2. Step 2: Convert to fraction form
    419.90/577.98 = 364.41/x
  3. Step 3: Cross multiply
    419.90x = 577.98 × 364.41
  4. Step 4: Simplify right side
    419.90x = 210,621.69
  5. Step 5: Solve for x
    x = 210,621.69/419.90
  6. Step 6: Final answer
    x = 501.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.