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Finding the Fourth Proportional to 130.36, 195.49 and 53.32

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Solution

The fourth proportional to 130.36, 195.49 and 53.32 is: 79.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.36 : 195.49 = 53.32 : x
  2. Step 2: Convert to fraction form
    130.36/195.49 = 53.32/x
  3. Step 3: Cross multiply
    130.36x = 195.49 × 53.32
  4. Step 4: Simplify right side
    130.36x = 10,423.53
  5. Step 5: Solve for x
    x = 10,423.53/130.36
  6. Step 6: Final answer
    x = 79.96

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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.