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Finding the Fourth Proportional to 627.14, 862.18 and 623.16

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Solution

The fourth proportional to 627.14, 862.18 and 623.16 is: 856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.14 : 862.18 = 623.16 : x
  2. Step 2: Convert to fraction form
    627.14/862.18 = 623.16/x
  3. Step 3: Cross multiply
    627.14x = 862.18 × 623.16
  4. Step 4: Simplify right side
    627.14x = 537,274.53
  5. Step 5: Solve for x
    x = 537,274.53/627.14
  6. Step 6: Final answer
    x = 856.70

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.