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Finding the Fourth Proportional to 1,214.66, 1,822.88 and 484.45

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Solution

The fourth proportional to 1,214.66, 1,822.88 and 484.45 is: 727.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.66 : 1,822.88 = 484.45 : x
  2. Step 2: Convert to fraction form
    1,214.66/1,822.88 = 484.45/x
  3. Step 3: Cross multiply
    1,214.66x = 1,822.88 × 484.45
  4. Step 4: Simplify right side
    1,214.66x = 883,089.66
  5. Step 5: Solve for x
    x = 883,089.66/1,214.66
  6. Step 6: Final answer
    x = 727.02

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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.