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Finding the Fourth Proportional to 507.20, 698.13 and 359.58

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Solution

The fourth proportional to 507.20, 698.13 and 359.58 is: 494.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.20 : 698.13 = 359.58 : x
  2. Step 2: Convert to fraction form
    507.20/698.13 = 359.58/x
  3. Step 3: Cross multiply
    507.20x = 698.13 × 359.58
  4. Step 4: Simplify right side
    507.20x = 251,033.59
  5. Step 5: Solve for x
    x = 251,033.59/507.20
  6. Step 6: Final answer
    x = 494.94

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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.