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Finding the Fourth Proportional to 1,435.38, 2,153.28 and 461.16

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Solution

The fourth proportional to 1,435.38, 2,153.28 and 461.16 is: 691.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.38 : 2,153.28 = 461.16 : x
  2. Step 2: Convert to fraction form
    1,435.38/2,153.28 = 461.16/x
  3. Step 3: Cross multiply
    1,435.38x = 2,153.28 × 461.16
  4. Step 4: Simplify right side
    1,435.38x = 993,006.60
  5. Step 5: Solve for x
    x = 993,006.60/1,435.38
  6. Step 6: Final answer
    x = 691.81

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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.