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Finding the Fourth Proportional to 404.24, 603.06 and 393.08

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Solution

The fourth proportional to 404.24, 603.06 and 393.08 is: 586.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.24 : 603.06 = 393.08 : x
  2. Step 2: Convert to fraction form
    404.24/603.06 = 393.08/x
  3. Step 3: Cross multiply
    404.24x = 603.06 × 393.08
  4. Step 4: Simplify right side
    404.24x = 237,047.81
  5. Step 5: Solve for x
    x = 237,047.81/404.24
  6. Step 6: Final answer
    x = 586.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.