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Finding the Fourth Proportional to 730.77, 1,009.68 and 723.47

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Solution

The fourth proportional to 730.77, 1,009.68 and 723.47 is: 999.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.77 : 1,009.68 = 723.47 : x
  2. Step 2: Convert to fraction form
    730.77/1,009.68 = 723.47/x
  3. Step 3: Cross multiply
    730.77x = 1,009.68 × 723.47
  4. Step 4: Simplify right side
    730.77x = 730,468.14
  5. Step 5: Solve for x
    x = 730,468.14/730.77
  6. Step 6: Final answer
    x = 999.59

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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.