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Finding the Fourth Proportional to 403.59, 556.98 and 248.25

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Solution

The fourth proportional to 403.59, 556.98 and 248.25 is: 342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.59 : 556.98 = 248.25 : x
  2. Step 2: Convert to fraction form
    403.59/556.98 = 248.25/x
  3. Step 3: Cross multiply
    403.59x = 556.98 × 248.25
  4. Step 4: Simplify right side
    403.59x = 138,270.29
  5. Step 5: Solve for x
    x = 138,270.29/403.59
  6. Step 6: Final answer
    x = 342.60

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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.