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Finding the Fourth Proportional to 140.63, 210.95 and 49.34

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Solution

The fourth proportional to 140.63, 210.95 and 49.34 is: 74.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.63 : 210.95 = 49.34 : x
  2. Step 2: Convert to fraction form
    140.63/210.95 = 49.34/x
  3. Step 3: Cross multiply
    140.63x = 210.95 × 49.34
  4. Step 4: Simplify right side
    140.63x = 10,406.97
  5. Step 5: Solve for x
    x = 10,406.97/140.63
  6. Step 6: Final answer
    x = 74.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.