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Finding the Fourth Proportional to 436.56, 652.08 and 339.36

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Solution

The fourth proportional to 436.56, 652.08 and 339.36 is: 506.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.56 : 652.08 = 339.36 : x
  2. Step 2: Convert to fraction form
    436.56/652.08 = 339.36/x
  3. Step 3: Cross multiply
    436.56x = 652.08 × 339.36
  4. Step 4: Simplify right side
    436.56x = 221,289.87
  5. Step 5: Solve for x
    x = 221,289.87/436.56
  6. Step 6: Final answer
    x = 506.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.