Home / 1,318.23-1,977.17-625.34

Finding the Fourth Proportional to 1,318.23, 1,977.17 and 625.34

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Solution

The fourth proportional to 1,318.23, 1,977.17 and 625.34 is: 937.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.23 : 1,977.17 = 625.34 : x
  2. Step 2: Convert to fraction form
    1,318.23/1,977.17 = 625.34/x
  3. Step 3: Cross multiply
    1,318.23x = 1,977.17 × 625.34
  4. Step 4: Simplify right side
    1,318.23x = 1,236,398.58
  5. Step 5: Solve for x
    x = 1,236,398.58/1,318.23
  6. Step 6: Final answer
    x = 937.92

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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.