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Finding the Fourth Proportional to 135.24, 186.57 and 130.00

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Solution

The fourth proportional to 135.24, 186.57 and 130.00 is: 179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.24 : 186.57 = 130.00 : x
  2. Step 2: Convert to fraction form
    135.24/186.57 = 130.00/x
  3. Step 3: Cross multiply
    135.24x = 186.57 × 130.00
  4. Step 4: Simplify right side
    135.24x = 24,254.14
  5. Step 5: Solve for x
    x = 24,254.14/135.24
  6. Step 6: Final answer
    x = 179.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.