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Finding the Fourth Proportional to 603.35, 899.91 and 511.41

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Solution

The fourth proportional to 603.35, 899.91 and 511.41 is: 762.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.35 : 899.91 = 511.41 : x
  2. Step 2: Convert to fraction form
    603.35/899.91 = 511.41/x
  3. Step 3: Cross multiply
    603.35x = 899.91 × 511.41
  4. Step 4: Simplify right side
    603.35x = 460,226.35
  5. Step 5: Solve for x
    x = 460,226.35/603.35
  6. Step 6: Final answer
    x = 762.79

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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.