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Finding the Fourth Proportional to 436.88, 603.24 and 281.84

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Solution

The fourth proportional to 436.88, 603.24 and 281.84 is: 389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.88 : 603.24 = 281.84 : x
  2. Step 2: Convert to fraction form
    436.88/603.24 = 281.84/x
  3. Step 3: Cross multiply
    436.88x = 603.24 × 281.84
  4. Step 4: Simplify right side
    436.88x = 170,017.16
  5. Step 5: Solve for x
    x = 170,017.16/436.88
  6. Step 6: Final answer
    x = 389.16

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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.