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Finding the Fourth Proportional to 436.36, 655.08 and 429.04

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Solution

The fourth proportional to 436.36, 655.08 and 429.04 is: 644.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.36 : 655.08 = 429.04 : x
  2. Step 2: Convert to fraction form
    436.36/655.08 = 429.04/x
  3. Step 3: Cross multiply
    436.36x = 655.08 × 429.04
  4. Step 4: Simplify right side
    436.36x = 281,055.52
  5. Step 5: Solve for x
    x = 281,055.52/436.36
  6. Step 6: Final answer
    x = 644.09

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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.