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Finding the Fourth Proportional to 55.70, 76.77 and 51.14

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Solution

The fourth proportional to 55.70, 76.77 and 51.14 is: 70.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.70 : 76.77 = 51.14 : x
  2. Step 2: Convert to fraction form
    55.70/76.77 = 51.14/x
  3. Step 3: Cross multiply
    55.70x = 76.77 × 51.14
  4. Step 4: Simplify right side
    55.70x = 3,926.02
  5. Step 5: Solve for x
    x = 3,926.02/55.70
  6. Step 6: Final answer
    x = 70.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.