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Finding the Fourth Proportional to 591.07, 815.25 and 455.98

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Solution

The fourth proportional to 591.07, 815.25 and 455.98 is: 628.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.07 : 815.25 = 455.98 : x
  2. Step 2: Convert to fraction form
    591.07/815.25 = 455.98/x
  3. Step 3: Cross multiply
    591.07x = 815.25 × 455.98
  4. Step 4: Simplify right side
    591.07x = 371,737.70
  5. Step 5: Solve for x
    x = 371,737.70/591.07
  6. Step 6: Final answer
    x = 628.92

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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.