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Finding the Fourth Proportional to 719.88, 992.73 and 436.23

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Solution

The fourth proportional to 719.88, 992.73 and 436.23 is: 601.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.88 : 992.73 = 436.23 : x
  2. Step 2: Convert to fraction form
    719.88/992.73 = 436.23/x
  3. Step 3: Cross multiply
    719.88x = 992.73 × 436.23
  4. Step 4: Simplify right side
    719.88x = 433,060.24
  5. Step 5: Solve for x
    x = 433,060.24/719.88
  6. Step 6: Final answer
    x = 601.58

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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.