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Finding the Fourth Proportional to 1,255.80, 1,884.53 and 476.50

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Solution

The fourth proportional to 1,255.80, 1,884.53 and 476.50 is: 715.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255.80 : 1,884.53 = 476.50 : x
  2. Step 2: Convert to fraction form
    1,255.80/1,884.53 = 476.50/x
  3. Step 3: Cross multiply
    1,255.80x = 1,884.53 × 476.50
  4. Step 4: Simplify right side
    1,255.80x = 897,978.55
  5. Step 5: Solve for x
    x = 897,978.55/1,255.80
  6. Step 6: Final answer
    x = 715.06

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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.