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Finding the Fourth Proportional to 627.60, 866.16 and 607.44

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Solution

The fourth proportional to 627.60, 866.16 and 607.44 is: 838.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.60 : 866.16 = 607.44 : x
  2. Step 2: Convert to fraction form
    627.60/866.16 = 607.44/x
  3. Step 3: Cross multiply
    627.60x = 866.16 × 607.44
  4. Step 4: Simplify right side
    627.60x = 526,140.23
  5. Step 5: Solve for x
    x = 526,140.23/627.60
  6. Step 6: Final answer
    x = 838.34

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1.5x scale

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.