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Finding the Fourth Proportional to 55.60, 76.24 and 53.67

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Solution

The fourth proportional to 55.60, 76.24 and 53.67 is: 73.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.60 : 76.24 = 53.67 : x
  2. Step 2: Convert to fraction form
    55.60/76.24 = 53.67/x
  3. Step 3: Cross multiply
    55.60x = 76.24 × 53.67
  4. Step 4: Simplify right side
    55.60x = 4,091.80
  5. Step 5: Solve for x
    x = 4,091.80/55.60
  6. Step 6: Final answer
    x = 73.59

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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.