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Finding the Fourth Proportional to 55.58, 83.02 and 50.16

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Solution

The fourth proportional to 55.58, 83.02 and 50.16 is: 74.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.58 : 83.02 = 50.16 : x
  2. Step 2: Convert to fraction form
    55.58/83.02 = 50.16/x
  3. Step 3: Cross multiply
    55.58x = 83.02 × 50.16
  4. Step 4: Simplify right side
    55.58x = 4,163.99
  5. Step 5: Solve for x
    x = 4,163.99/55.58
  6. Step 6: Final answer
    x = 74.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.