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Finding the Fourth Proportional to 88.01, 131.72 and 53.60

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Solution

The fourth proportional to 88.01, 131.72 and 53.60 is: 80.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.01 : 131.72 = 53.60 : x
  2. Step 2: Convert to fraction form
    88.01/131.72 = 53.60/x
  3. Step 3: Cross multiply
    88.01x = 131.72 × 53.60
  4. Step 4: Simplify right side
    88.01x = 7,060.31
  5. Step 5: Solve for x
    x = 7,060.31/88.01
  6. Step 6: Final answer
    x = 80.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.