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Finding the Fourth Proportional to 941.56, 1,412.14 and 666.88

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Solution

The fourth proportional to 941.56, 1,412.14 and 666.88 is: 1,000.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.56 : 1,412.14 = 666.88 : x
  2. Step 2: Convert to fraction form
    941.56/1,412.14 = 666.88/x
  3. Step 3: Cross multiply
    941.56x = 1,412.14 × 666.88
  4. Step 4: Simplify right side
    941.56x = 941,727.92
  5. Step 5: Solve for x
    x = 941,727.92/941.56
  6. Step 6: Final answer
    x = 1,000.18

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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.