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Finding the Fourth Proportional to 50.40, 74.52 and 50.40

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Solution

The fourth proportional to 50.40, 74.52 and 50.40 is: 74.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.40 : 74.52 = 50.40 : x
  2. Step 2: Convert to fraction form
    50.40/74.52 = 50.40/x
  3. Step 3: Cross multiply
    50.40x = 74.52 × 50.40
  4. Step 4: Simplify right side
    50.40x = 3,755.81
  5. Step 5: Solve for x
    x = 3,755.81/50.40
  6. Step 6: Final answer
    x = 74.52

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.