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Finding the Fourth Proportional to 436.93, 603.17 and 279.79

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Solution

The fourth proportional to 436.93, 603.17 and 279.79 is: 386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.93 : 603.17 = 279.79 : x
  2. Step 2: Convert to fraction form
    436.93/603.17 = 279.79/x
  3. Step 3: Cross multiply
    436.93x = 603.17 × 279.79
  4. Step 4: Simplify right side
    436.93x = 168,762.41
  5. Step 5: Solve for x
    x = 168,762.41/436.93
  6. Step 6: Final answer
    x = 386.24

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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.