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Finding the Fourth Proportional to 701.77, 1,052.65 and 214.81

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Solution

The fourth proportional to 701.77, 1,052.65 and 214.81 is: 322.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.77 : 1,052.65 = 214.81 : x
  2. Step 2: Convert to fraction form
    701.77/1,052.65 = 214.81/x
  3. Step 3: Cross multiply
    701.77x = 1,052.65 × 214.81
  4. Step 4: Simplify right side
    701.77x = 226,119.14
  5. Step 5: Solve for x
    x = 226,119.14/701.77
  6. Step 6: Final answer
    x = 322.21

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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.