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Finding the Fourth Proportional to 44.66, 66.45 and 43.18

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Solution

The fourth proportional to 44.66, 66.45 and 43.18 is: 64.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.66 : 66.45 = 43.18 : x
  2. Step 2: Convert to fraction form
    44.66/66.45 = 43.18/x
  3. Step 3: Cross multiply
    44.66x = 66.45 × 43.18
  4. Step 4: Simplify right side
    44.66x = 2,869.31
  5. Step 5: Solve for x
    x = 2,869.31/44.66
  6. Step 6: Final answer
    x = 64.25

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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.