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Finding the Fourth Proportional to 57.53, 79.47 and 41.12

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Solution

The fourth proportional to 57.53, 79.47 and 41.12 is: 56.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.53 : 79.47 = 41.12 : x
  2. Step 2: Convert to fraction form
    57.53/79.47 = 41.12/x
  3. Step 3: Cross multiply
    57.53x = 79.47 × 41.12
  4. Step 4: Simplify right side
    57.53x = 3,267.81
  5. Step 5: Solve for x
    x = 3,267.81/57.53
  6. Step 6: Final answer
    x = 56.80

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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.