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Finding the Fourth Proportional to 1,474.58, 2,212.43 and 652.28

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Solution

The fourth proportional to 1,474.58, 2,212.43 and 652.28 is: 978.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.58 : 2,212.43 = 652.28 : x
  2. Step 2: Convert to fraction form
    1,474.58/2,212.43 = 652.28/x
  3. Step 3: Cross multiply
    1,474.58x = 2,212.43 × 652.28
  4. Step 4: Simplify right side
    1,474.58x = 1,443,109.52
  5. Step 5: Solve for x
    x = 1,443,109.52/1,474.58
  6. Step 6: Final answer
    x = 978.66

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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.