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Finding the Fourth Proportional to 140.84, 210.10 and 131.02

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Solution

The fourth proportional to 140.84, 210.10 and 131.02 is: 195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.84 : 210.10 = 131.02 : x
  2. Step 2: Convert to fraction form
    140.84/210.10 = 131.02/x
  3. Step 3: Cross multiply
    140.84x = 210.10 × 131.02
  4. Step 4: Simplify right side
    140.84x = 27,527.30
  5. Step 5: Solve for x
    x = 27,527.30/140.84
  6. Step 6: Final answer
    x = 195.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.