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Finding the Fourth Proportional to 456.13, 629.32 and 269.64

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Solution

The fourth proportional to 456.13, 629.32 and 269.64 is: 372.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.13 : 629.32 = 269.64 : x
  2. Step 2: Convert to fraction form
    456.13/629.32 = 269.64/x
  3. Step 3: Cross multiply
    456.13x = 629.32 × 269.64
  4. Step 4: Simplify right side
    456.13x = 169,689.84
  5. Step 5: Solve for x
    x = 169,689.84/456.13
  6. Step 6: Final answer
    x = 372.02

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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.