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Finding the Fourth Proportional to 297.60, 448.63 and 277.78

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Solution

The fourth proportional to 297.60, 448.63 and 277.78 is: 418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.60 : 448.63 = 277.78 : x
  2. Step 2: Convert to fraction form
    297.60/448.63 = 277.78/x
  3. Step 3: Cross multiply
    297.60x = 448.63 × 277.78
  4. Step 4: Simplify right side
    297.60x = 124,619.67
  5. Step 5: Solve for x
    x = 124,619.67/297.60
  6. Step 6: Final answer
    x = 418.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.