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Finding the Fourth Proportional to 55.88, 77.50 and 50.48

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Solution

The fourth proportional to 55.88, 77.50 and 50.48 is: 70.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.88 : 77.50 = 50.48 : x
  2. Step 2: Convert to fraction form
    55.88/77.50 = 50.48/x
  3. Step 3: Cross multiply
    55.88x = 77.50 × 50.48
  4. Step 4: Simplify right side
    55.88x = 3,911.95
  5. Step 5: Solve for x
    x = 3,911.95/55.88
  6. Step 6: Final answer
    x = 70.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.