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Finding the Fourth Proportional to 507.09, 698.25 and 418.24

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Solution

The fourth proportional to 507.09, 698.25 and 418.24 is: 575.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.09 : 698.25 = 418.24 : x
  2. Step 2: Convert to fraction form
    507.09/698.25 = 418.24/x
  3. Step 3: Cross multiply
    507.09x = 698.25 × 418.24
  4. Step 4: Simplify right side
    507.09x = 292,036.08
  5. Step 5: Solve for x
    x = 292,036.08/507.09
  6. Step 6: Final answer
    x = 575.91

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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.