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Finding the Fourth Proportional to 1,297.77, 1,947.18 and 476.11

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Solution

The fourth proportional to 1,297.77, 1,947.18 and 476.11 is: 714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.77 : 1,947.18 = 476.11 : x
  2. Step 2: Convert to fraction form
    1,297.77/1,947.18 = 476.11/x
  3. Step 3: Cross multiply
    1,297.77x = 1,947.18 × 476.11
  4. Step 4: Simplify right side
    1,297.77x = 927,071.87
  5. Step 5: Solve for x
    x = 927,071.87/1,297.77
  6. Step 6: Final answer
    x = 714.36

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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.