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Finding the Fourth Proportional to 51.42, 77.17 and 46.03

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Solution

The fourth proportional to 51.42, 77.17 and 46.03 is: 69.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.42 : 77.17 = 46.03 : x
  2. Step 2: Convert to fraction form
    51.42/77.17 = 46.03/x
  3. Step 3: Cross multiply
    51.42x = 77.17 × 46.03
  4. Step 4: Simplify right side
    51.42x = 3,552.14
  5. Step 5: Solve for x
    x = 3,552.14/51.42
  6. Step 6: Final answer
    x = 69.08

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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.