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Finding the Fourth Proportional to 801.16, 1,104.52 and 623.87

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Solution

The fourth proportional to 801.16, 1,104.52 and 623.87 is: 860.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.16 : 1,104.52 = 623.87 : x
  2. Step 2: Convert to fraction form
    801.16/1,104.52 = 623.87/x
  3. Step 3: Cross multiply
    801.16x = 1,104.52 × 623.87
  4. Step 4: Simplify right side
    801.16x = 689,076.89
  5. Step 5: Solve for x
    x = 689,076.89/801.16
  6. Step 6: Final answer
    x = 860.10

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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.