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Finding the Fourth Proportional to 44.51, 66.57 and 43.40

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Solution

The fourth proportional to 44.51, 66.57 and 43.40 is: 64.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.51 : 66.57 = 43.40 : x
  2. Step 2: Convert to fraction form
    44.51/66.57 = 43.40/x
  3. Step 3: Cross multiply
    44.51x = 66.57 × 43.40
  4. Step 4: Simplify right side
    44.51x = 2,888.81
  5. Step 5: Solve for x
    x = 2,888.81/44.51
  6. Step 6: Final answer
    x = 64.91

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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.