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Finding the Fourth Proportional to 56.35, 84.43 and 43.48

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Solution

The fourth proportional to 56.35, 84.43 and 43.48 is: 65.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.35 : 84.43 = 43.48 : x
  2. Step 2: Convert to fraction form
    56.35/84.43 = 43.48/x
  3. Step 3: Cross multiply
    56.35x = 84.43 × 43.48
  4. Step 4: Simplify right side
    56.35x = 3,671.02
  5. Step 5: Solve for x
    x = 3,671.02/56.35
  6. Step 6: Final answer
    x = 65.15

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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.