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Finding the Fourth Proportional to 1,282.86, 1,925.13 and 461.13

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Solution

The fourth proportional to 1,282.86, 1,925.13 and 461.13 is: 692.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.86 : 1,925.13 = 461.13 : x
  2. Step 2: Convert to fraction form
    1,282.86/1,925.13 = 461.13/x
  3. Step 3: Cross multiply
    1,282.86x = 1,925.13 × 461.13
  4. Step 4: Simplify right side
    1,282.86x = 887,735.20
  5. Step 5: Solve for x
    x = 887,735.20/1,282.86
  6. Step 6: Final answer
    x = 692.00

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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.