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Finding the Fourth Proportional to 57.59, 79.41 and 40.98

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Solution

The fourth proportional to 57.59, 79.41 and 40.98 is: 56.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.59 : 79.41 = 40.98 : x
  2. Step 2: Convert to fraction form
    57.59/79.41 = 40.98/x
  3. Step 3: Cross multiply
    57.59x = 79.41 × 40.98
  4. Step 4: Simplify right side
    57.59x = 3,254.42
  5. Step 5: Solve for x
    x = 3,254.42/57.59
  6. Step 6: Final answer
    x = 56.51

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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.