Home / 588.14-811.32-391.40

Finding the Fourth Proportional to 588.14, 811.32 and 391.40

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Solution

The fourth proportional to 588.14, 811.32 and 391.40 is: 539.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.14 : 811.32 = 391.40 : x
  2. Step 2: Convert to fraction form
    588.14/811.32 = 391.40/x
  3. Step 3: Cross multiply
    588.14x = 811.32 × 391.40
  4. Step 4: Simplify right side
    588.14x = 317,550.65
  5. Step 5: Solve for x
    x = 317,550.65/588.14
  6. Step 6: Final answer
    x = 539.92

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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.