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Finding the Fourth Proportional to 53.20, 73.34 and 43.35

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Solution

The fourth proportional to 53.20, 73.34 and 43.35 is: 59.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.20 : 73.34 = 43.35 : x
  2. Step 2: Convert to fraction form
    53.20/73.34 = 43.35/x
  3. Step 3: Cross multiply
    53.20x = 73.34 × 43.35
  4. Step 4: Simplify right side
    53.20x = 3,179.07
  5. Step 5: Solve for x
    x = 3,179.07/53.20
  6. Step 6: Final answer
    x = 59.76

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Why These Related Problems?

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