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Finding the Fourth Proportional to 436.79, 603.03 and 281.63

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Solution

The fourth proportional to 436.79, 603.03 and 281.63 is: 388.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.79 : 603.03 = 281.63 : x
  2. Step 2: Convert to fraction form
    436.79/603.03 = 281.63/x
  3. Step 3: Cross multiply
    436.79x = 603.03 × 281.63
  4. Step 4: Simplify right side
    436.79x = 169,828.32
  5. Step 5: Solve for x
    x = 169,828.32/436.79
  6. Step 6: Final answer
    x = 388.81

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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.