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Finding the Fourth Proportional to 53.35, 80.01 and 19.10

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Solution

The fourth proportional to 53.35, 80.01 and 19.10 is: 28.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.35 : 80.01 = 19.10 : x
  2. Step 2: Convert to fraction form
    53.35/80.01 = 19.10/x
  3. Step 3: Cross multiply
    53.35x = 80.01 × 19.10
  4. Step 4: Simplify right side
    53.35x = 1,528.14
  5. Step 5: Solve for x
    x = 1,528.14/53.35
  6. Step 6: Final answer
    x = 28.65

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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.