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Finding the Fourth Proportional to 130.02, 179.19 and 115.50

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Solution

The fourth proportional to 130.02, 179.19 and 115.50 is: 159.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.02 : 179.19 = 115.50 : x
  2. Step 2: Convert to fraction form
    130.02/179.19 = 115.50/x
  3. Step 3: Cross multiply
    130.02x = 179.19 × 115.50
  4. Step 4: Simplify right side
    130.02x = 20,696.45
  5. Step 5: Solve for x
    x = 20,696.45/130.02
  6. Step 6: Final answer
    x = 159.18

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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.