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Finding the Fourth Proportional to 1,485.62, 2,051.09 and 954.74

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Solution

The fourth proportional to 1,485.62, 2,051.09 and 954.74 is: 1,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.62 : 2,051.09 = 954.74 : x
  2. Step 2: Convert to fraction form
    1,485.62/2,051.09 = 954.74/x
  3. Step 3: Cross multiply
    1,485.62x = 2,051.09 × 954.74
  4. Step 4: Simplify right side
    1,485.62x = 1,958,265.18
  5. Step 5: Solve for x
    x = 1,958,265.18/1,485.62
  6. Step 6: Final answer
    x = 1,318.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.