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Finding the Fourth Proportional to 424.63, 584.76 and 415.09

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Solution

The fourth proportional to 424.63, 584.76 and 415.09 is: 571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.63 : 584.76 = 415.09 : x
  2. Step 2: Convert to fraction form
    424.63/584.76 = 415.09/x
  3. Step 3: Cross multiply
    424.63x = 584.76 × 415.09
  4. Step 4: Simplify right side
    424.63x = 242,728.03
  5. Step 5: Solve for x
    x = 242,728.03/424.63
  6. Step 6: Final answer
    x = 571.62

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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.