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Finding the Fourth Proportional to 552.47, 827.93 and 436.40

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Solution

The fourth proportional to 552.47, 827.93 and 436.40 is: 653.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.47 : 827.93 = 436.40 : x
  2. Step 2: Convert to fraction form
    552.47/827.93 = 436.40/x
  3. Step 3: Cross multiply
    552.47x = 827.93 × 436.40
  4. Step 4: Simplify right side
    552.47x = 361,308.65
  5. Step 5: Solve for x
    x = 361,308.65/552.47
  6. Step 6: Final answer
    x = 653.99

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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.