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Finding the Fourth Proportional to 487.26, 673.64 and 377.10

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Solution

The fourth proportional to 487.26, 673.64 and 377.10 is: 521.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.26 : 673.64 = 377.10 : x
  2. Step 2: Convert to fraction form
    487.26/673.64 = 377.10/x
  3. Step 3: Cross multiply
    487.26x = 673.64 × 377.10
  4. Step 4: Simplify right side
    487.26x = 254,029.64
  5. Step 5: Solve for x
    x = 254,029.64/487.26
  6. Step 6: Final answer
    x = 521.34

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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.