Home / 1,318.53-1,977.39-624.99

Finding the Fourth Proportional to 1,318.53, 1,977.39 and 624.99

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Solution

The fourth proportional to 1,318.53, 1,977.39 and 624.99 is: 937.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.53 : 1,977.39 = 624.99 : x
  2. Step 2: Convert to fraction form
    1,318.53/1,977.39 = 624.99/x
  3. Step 3: Cross multiply
    1,318.53x = 1,977.39 × 624.99
  4. Step 4: Simplify right side
    1,318.53x = 1,235,849.07
  5. Step 5: Solve for x
    x = 1,235,849.07/1,318.53
  6. Step 6: Final answer
    x = 937.29

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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.