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Finding the Fourth Proportional to 1,456.35, 2,184.35 and 578.58

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Solution

The fourth proportional to 1,456.35, 2,184.35 and 578.58 is: 867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.35 : 2,184.35 = 578.58 : x
  2. Step 2: Convert to fraction form
    1,456.35/2,184.35 = 578.58/x
  3. Step 3: Cross multiply
    1,456.35x = 2,184.35 × 578.58
  4. Step 4: Simplify right side
    1,456.35x = 1,263,818.33
  5. Step 5: Solve for x
    x = 1,263,818.33/1,456.35
  6. Step 6: Final answer
    x = 867.80

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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.