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Finding the Fourth Proportional to 70.01, 96.63 and 43.80

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Solution

The fourth proportional to 70.01, 96.63 and 43.80 is: 60.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.01 : 96.63 = 43.80 : x
  2. Step 2: Convert to fraction form
    70.01/96.63 = 43.80/x
  3. Step 3: Cross multiply
    70.01x = 96.63 × 43.80
  4. Step 4: Simplify right side
    70.01x = 4,232.12
  5. Step 5: Solve for x
    x = 4,232.12/70.01
  6. Step 6: Final answer
    x = 60.45

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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.