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Finding the Fourth Proportional to 507.47, 760.29 and 449.45

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Solution

The fourth proportional to 507.47, 760.29 and 449.45 is: 673.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.47 : 760.29 = 449.45 : x
  2. Step 2: Convert to fraction form
    507.47/760.29 = 449.45/x
  3. Step 3: Cross multiply
    507.47x = 760.29 × 449.45
  4. Step 4: Simplify right side
    507.47x = 341,709.70
  5. Step 5: Solve for x
    x = 341,709.70/507.47
  6. Step 6: Final answer
    x = 673.37

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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.