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Finding the Fourth Proportional to 723.09, 1,085.73 and 710.13

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Solution

The fourth proportional to 723.09, 1,085.73 and 710.13 is: 1,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.09 : 1,085.73 = 710.13 : x
  2. Step 2: Convert to fraction form
    723.09/1,085.73 = 710.13/x
  3. Step 3: Cross multiply
    723.09x = 1,085.73 × 710.13
  4. Step 4: Simplify right side
    723.09x = 771,009.44
  5. Step 5: Solve for x
    x = 771,009.44/723.09
  6. Step 6: Final answer
    x = 1,066.27

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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.