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Finding the Fourth Proportional to 145.88, 219.84 and 131.46

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Solution

The fourth proportional to 145.88, 219.84 and 131.46 is: 198.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.88 : 219.84 = 131.46 : x
  2. Step 2: Convert to fraction form
    145.88/219.84 = 131.46/x
  3. Step 3: Cross multiply
    145.88x = 219.84 × 131.46
  4. Step 4: Simplify right side
    145.88x = 28,900.17
  5. Step 5: Solve for x
    x = 28,900.17/145.88
  6. Step 6: Final answer
    x = 198.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.