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Finding the Fourth Proportional to 719.99, 992.46 and 602.36

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Solution

The fourth proportional to 719.99, 992.46 and 602.36 is: 830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.99 : 992.46 = 602.36 : x
  2. Step 2: Convert to fraction form
    719.99/992.46 = 602.36/x
  3. Step 3: Cross multiply
    719.99x = 992.46 × 602.36
  4. Step 4: Simplify right side
    719.99x = 597,818.21
  5. Step 5: Solve for x
    x = 597,818.21/719.99
  6. Step 6: Final answer
    x = 830.31

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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.