Home / 1,045.16-1,442.34-579.40

Finding the Fourth Proportional to 1,045.16, 1,442.34 and 579.40

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Solution

The fourth proportional to 1,045.16, 1,442.34 and 579.40 is: 799.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.16 : 1,442.34 = 579.40 : x
  2. Step 2: Convert to fraction form
    1,045.16/1,442.34 = 579.40/x
  3. Step 3: Cross multiply
    1,045.16x = 1,442.34 × 579.40
  4. Step 4: Simplify right side
    1,045.16x = 835,691.80
  5. Step 5: Solve for x
    x = 835,691.80/1,045.16
  6. Step 6: Final answer
    x = 799.58

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1.5x scale

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.