Home / 905.03-1,248.94-512.06

Finding the Fourth Proportional to 905.03, 1,248.94 and 512.06

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Solution

The fourth proportional to 905.03, 1,248.94 and 512.06 is: 706.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.03 : 1,248.94 = 512.06 : x
  2. Step 2: Convert to fraction form
    905.03/1,248.94 = 512.06/x
  3. Step 3: Cross multiply
    905.03x = 1,248.94 × 512.06
  4. Step 4: Simplify right side
    905.03x = 639,534.06
  5. Step 5: Solve for x
    x = 639,534.06/905.03
  6. Step 6: Final answer
    x = 706.64

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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.