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Finding the Fourth Proportional to 1,094.60, 1,510.54 and 628.85

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Solution

The fourth proportional to 1,094.60, 1,510.54 and 628.85 is: 867.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.60 : 1,510.54 = 628.85 : x
  2. Step 2: Convert to fraction form
    1,094.60/1,510.54 = 628.85/x
  3. Step 3: Cross multiply
    1,094.60x = 1,510.54 × 628.85
  4. Step 4: Simplify right side
    1,094.60x = 949,903.08
  5. Step 5: Solve for x
    x = 949,903.08/1,094.60
  6. Step 6: Final answer
    x = 867.81

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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.