Home / 1,045.18-1,442.40-579.44

Finding the Fourth Proportional to 1,045.18, 1,442.40 and 579.44

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Solution

The fourth proportional to 1,045.18, 1,442.40 and 579.44 is: 799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.18 : 1,442.40 = 579.44 : x
  2. Step 2: Convert to fraction form
    1,045.18/1,442.40 = 579.44/x
  3. Step 3: Cross multiply
    1,045.18x = 1,442.40 × 579.44
  4. Step 4: Simplify right side
    1,045.18x = 835,784.26
  5. Step 5: Solve for x
    x = 835,784.26/1,045.18
  6. Step 6: Final answer
    x = 799.66

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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.