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Finding the Fourth Proportional to 43.69, 65.58 and 43.51

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Solution

The fourth proportional to 43.69, 65.58 and 43.51 is: 65.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.69 : 65.58 = 43.51 : x
  2. Step 2: Convert to fraction form
    43.69/65.58 = 43.51/x
  3. Step 3: Cross multiply
    43.69x = 65.58 × 43.51
  4. Step 4: Simplify right side
    43.69x = 2,853.39
  5. Step 5: Solve for x
    x = 2,853.39/43.69
  6. Step 6: Final answer
    x = 65.31

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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.