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Finding the Fourth Proportional to 449.17, 673.75 and 156.68

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Solution

The fourth proportional to 449.17, 673.75 and 156.68 is: 235.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.17 : 673.75 = 156.68 : x
  2. Step 2: Convert to fraction form
    449.17/673.75 = 156.68/x
  3. Step 3: Cross multiply
    449.17x = 673.75 × 156.68
  4. Step 4: Simplify right side
    449.17x = 105,559.78
  5. Step 5: Solve for x
    x = 105,559.78/449.17
  6. Step 6: Final answer
    x = 235.01

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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.