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Finding the Fourth Proportional to 591.15, 815.11 and 424.83

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Solution

The fourth proportional to 591.15, 815.11 and 424.83 is: 585.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.15 : 815.11 = 424.83 : x
  2. Step 2: Convert to fraction form
    591.15/815.11 = 424.83/x
  3. Step 3: Cross multiply
    591.15x = 815.11 × 424.83
  4. Step 4: Simplify right side
    591.15x = 346,283.18
  5. Step 5: Solve for x
    x = 346,283.18/591.15
  6. Step 6: Final answer
    x = 585.78

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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.