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Finding the Fourth Proportional to 44.65, 66.72 and 43.03

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Solution

The fourth proportional to 44.65, 66.72 and 43.03 is: 64.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.65 : 66.72 = 43.03 : x
  2. Step 2: Convert to fraction form
    44.65/66.72 = 43.03/x
  3. Step 3: Cross multiply
    44.65x = 66.72 × 43.03
  4. Step 4: Simplify right side
    44.65x = 2,871.21
  5. Step 5: Solve for x
    x = 2,871.21/44.65
  6. Step 6: Final answer
    x = 64.30

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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.