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Finding the Fourth Proportional to 253.40, 377.69 and 252.99

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Solution

The fourth proportional to 253.40, 377.69 and 252.99 is: 377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.40 : 377.69 = 252.99 : x
  2. Step 2: Convert to fraction form
    253.40/377.69 = 252.99/x
  3. Step 3: Cross multiply
    253.40x = 377.69 × 252.99
  4. Step 4: Simplify right side
    253.40x = 95,550.53
  5. Step 5: Solve for x
    x = 95,550.53/253.40
  6. Step 6: Final answer
    x = 377.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.