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Finding the Fourth Proportional to 45.03, 66.93 and 43.86

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Solution

The fourth proportional to 45.03, 66.93 and 43.86 is: 65.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.03 : 66.93 = 43.86 : x
  2. Step 2: Convert to fraction form
    45.03/66.93 = 43.86/x
  3. Step 3: Cross multiply
    45.03x = 66.93 × 43.86
  4. Step 4: Simplify right side
    45.03x = 2,935.51
  5. Step 5: Solve for x
    x = 2,935.51/45.03
  6. Step 6: Final answer
    x = 65.19

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.