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Finding the Fourth Proportional to 65.94, 99.04 and 43.14

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Solution

The fourth proportional to 65.94, 99.04 and 43.14 is: 64.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65.94 : 99.04 = 43.14 : x
  2. Step 2: Convert to fraction form
    65.94/99.04 = 43.14/x
  3. Step 3: Cross multiply
    65.94x = 99.04 × 43.14
  4. Step 4: Simplify right side
    65.94x = 4,272.59
  5. Step 5: Solve for x
    x = 4,272.59/65.94
  6. Step 6: Final answer
    x = 64.80

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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.