Home / 1,045.12-1,442.10-625.96

Finding the Fourth Proportional to 1,045.12, 1,442.10 and 625.96

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Solution

The fourth proportional to 1,045.12, 1,442.10 and 625.96 is: 863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.12 : 1,442.10 = 625.96 : x
  2. Step 2: Convert to fraction form
    1,045.12/1,442.10 = 625.96/x
  3. Step 3: Cross multiply
    1,045.12x = 1,442.10 × 625.96
  4. Step 4: Simplify right side
    1,045.12x = 902,696.92
  5. Step 5: Solve for x
    x = 902,696.92/1,045.12
  6. Step 6: Final answer
    x = 863.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.