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Finding the Fourth Proportional to 638.45, 956.04 and 584.99

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Solution

The fourth proportional to 638.45, 956.04 and 584.99 is: 875.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    638.45 : 956.04 = 584.99 : x
  2. Step 2: Convert to fraction form
    638.45/956.04 = 584.99/x
  3. Step 3: Cross multiply
    638.45x = 956.04 × 584.99
  4. Step 4: Simplify right side
    638.45x = 559,269.06
  5. Step 5: Solve for x
    x = 559,269.06/638.45
  6. Step 6: Final answer
    x = 875.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.