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Finding the Fourth Proportional to 55.10, 75.62 and 54.33

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Solution

The fourth proportional to 55.10, 75.62 and 54.33 is: 74.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.10 : 75.62 = 54.33 : x
  2. Step 2: Convert to fraction form
    55.10/75.62 = 54.33/x
  3. Step 3: Cross multiply
    55.10x = 75.62 × 54.33
  4. Step 4: Simplify right side
    55.10x = 4,108.16
  5. Step 5: Solve for x
    x = 4,108.16/55.10
  6. Step 6: Final answer
    x = 74.57

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.