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Finding the Fourth Proportional to 719.25, 992.55 and 404.52

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Solution

The fourth proportional to 719.25, 992.55 and 404.52 is: 558.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.25 : 992.55 = 404.52 : x
  2. Step 2: Convert to fraction form
    719.25/992.55 = 404.52/x
  3. Step 3: Cross multiply
    719.25x = 992.55 × 404.52
  4. Step 4: Simplify right side
    719.25x = 401,506.33
  5. Step 5: Solve for x
    x = 401,506.33/719.25
  6. Step 6: Final answer
    x = 558.23

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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.