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Finding the Fourth Proportional to 407.28, 606.54 and 404.94

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Solution

The fourth proportional to 407.28, 606.54 and 404.94 is: 603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.28 : 606.54 = 404.94 : x
  2. Step 2: Convert to fraction form
    407.28/606.54 = 404.94/x
  3. Step 3: Cross multiply
    407.28x = 606.54 × 404.94
  4. Step 4: Simplify right side
    407.28x = 245,612.31
  5. Step 5: Solve for x
    x = 245,612.31/407.28
  6. Step 6: Final answer
    x = 603.06

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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.