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Finding the Fourth Proportional to 634.15, 950.18 and 390.16

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Solution

The fourth proportional to 634.15, 950.18 and 390.16 is: 584.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.15 : 950.18 = 390.16 : x
  2. Step 2: Convert to fraction form
    634.15/950.18 = 390.16/x
  3. Step 3: Cross multiply
    634.15x = 950.18 × 390.16
  4. Step 4: Simplify right side
    634.15x = 370,715.53
  5. Step 5: Solve for x
    x = 370,715.53/634.15
  6. Step 6: Final answer
    x = 584.59

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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.