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Finding the Fourth Proportional to 1,246.53, 1,868.10 and 476.61

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Solution

The fourth proportional to 1,246.53, 1,868.10 and 476.61 is: 714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.53 : 1,868.10 = 476.61 : x
  2. Step 2: Convert to fraction form
    1,246.53/1,868.10 = 476.61/x
  3. Step 3: Cross multiply
    1,246.53x = 1,868.10 × 476.61
  4. Step 4: Simplify right side
    1,246.53x = 890,355.14
  5. Step 5: Solve for x
    x = 890,355.14/1,246.53
  6. Step 6: Final answer
    x = 714.27

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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.