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Finding the Fourth Proportional to 1,256.91, 1,885.02 and 476.37

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Solution

The fourth proportional to 1,256.91, 1,885.02 and 476.37 is: 714.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.91 : 1,885.02 = 476.37 : x
  2. Step 2: Convert to fraction form
    1,256.91/1,885.02 = 476.37/x
  3. Step 3: Cross multiply
    1,256.91x = 1,885.02 × 476.37
  4. Step 4: Simplify right side
    1,256.91x = 897,966.98
  5. Step 5: Solve for x
    x = 897,966.98/1,256.91
  6. Step 6: Final answer
    x = 714.42

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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.