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Finding the Fourth Proportional to 1,037.46, 1,558.24 and 627.40

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Solution

The fourth proportional to 1,037.46, 1,558.24 and 627.40 is: 942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.46 : 1,558.24 = 627.40 : x
  2. Step 2: Convert to fraction form
    1,037.46/1,558.24 = 627.40/x
  3. Step 3: Cross multiply
    1,037.46x = 1,558.24 × 627.40
  4. Step 4: Simplify right side
    1,037.46x = 977,631.39
  5. Step 5: Solve for x
    x = 977,631.39/1,037.46
  6. Step 6: Final answer
    x = 942.33

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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.