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Finding the Fourth Proportional to 1,253.10, 1,878.96 and 462.13

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Solution

The fourth proportional to 1,253.10, 1,878.96 and 462.13 is: 692.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.10 : 1,878.96 = 462.13 : x
  2. Step 2: Convert to fraction form
    1,253.10/1,878.96 = 462.13/x
  3. Step 3: Cross multiply
    1,253.10x = 1,878.96 × 462.13
  4. Step 4: Simplify right side
    1,253.10x = 868,323.78
  5. Step 5: Solve for x
    x = 868,323.78/1,253.10
  6. Step 6: Final answer
    x = 692.94

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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.