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Finding the Fourth Proportional to 45.78, 63.06 and 43.16

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Solution

The fourth proportional to 45.78, 63.06 and 43.16 is: 59.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.78 : 63.06 = 43.16 : x
  2. Step 2: Convert to fraction form
    45.78/63.06 = 43.16/x
  3. Step 3: Cross multiply
    45.78x = 63.06 × 43.16
  4. Step 4: Simplify right side
    45.78x = 2,721.67
  5. Step 5: Solve for x
    x = 2,721.67/45.78
  6. Step 6: Final answer
    x = 59.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.