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Finding the Fourth Proportional to 55.93, 77.28 and 43.75

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Solution

The fourth proportional to 55.93, 77.28 and 43.75 is: 60.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.93 : 77.28 = 43.75 : x
  2. Step 2: Convert to fraction form
    55.93/77.28 = 43.75/x
  3. Step 3: Cross multiply
    55.93x = 77.28 × 43.75
  4. Step 4: Simplify right side
    55.93x = 3,381
  5. Step 5: Solve for x
    x = 3,381/55.93
  6. Step 6: Final answer
    x = 60.45

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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.