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Finding the Fourth Proportional to 603.09, 906.16 and 578.79

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Solution

The fourth proportional to 603.09, 906.16 and 578.79 is: 869.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.09 : 906.16 = 578.79 : x
  2. Step 2: Convert to fraction form
    603.09/906.16 = 578.79/x
  3. Step 3: Cross multiply
    603.09x = 906.16 × 578.79
  4. Step 4: Simplify right side
    603.09x = 524,476.35
  5. Step 5: Solve for x
    x = 524,476.35/603.09
  6. Step 6: Final answer
    x = 869.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.