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Finding the Fourth Proportional to 544.41, 816.45 and 420.93

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Solution

The fourth proportional to 544.41, 816.45 and 420.93 is: 631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.41 : 816.45 = 420.93 : x
  2. Step 2: Convert to fraction form
    544.41/816.45 = 420.93/x
  3. Step 3: Cross multiply
    544.41x = 816.45 × 420.93
  4. Step 4: Simplify right side
    544.41x = 343,668.30
  5. Step 5: Solve for x
    x = 343,668.30/544.41
  6. Step 6: Final answer
    x = 631.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.