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Finding the Fourth Proportional to 673.10, 929.18 and 445.97

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Solution

The fourth proportional to 673.10, 929.18 and 445.97 is: 615.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.10 : 929.18 = 445.97 : x
  2. Step 2: Convert to fraction form
    673.10/929.18 = 445.97/x
  3. Step 3: Cross multiply
    673.10x = 929.18 × 445.97
  4. Step 4: Simplify right side
    673.10x = 414,381.76
  5. Step 5: Solve for x
    x = 414,381.76/673.10
  6. Step 6: Final answer
    x = 615.63

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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.