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Finding the Fourth Proportional to 150.55, 207.83 and 130.91

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Solution

The fourth proportional to 150.55, 207.83 and 130.91 is: 180.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.55 : 207.83 = 130.91 : x
  2. Step 2: Convert to fraction form
    150.55/207.83 = 130.91/x
  3. Step 3: Cross multiply
    150.55x = 207.83 × 130.91
  4. Step 4: Simplify right side
    150.55x = 27,206.31
  5. Step 5: Solve for x
    x = 27,206.31/150.55
  6. Step 6: Final answer
    x = 180.72

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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.