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Finding the Fourth Proportional to 1,252.88, 1,878.88 and 522.32

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Solution

The fourth proportional to 1,252.88, 1,878.88 and 522.32 is: 783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.88 : 1,878.88 = 522.32 : x
  2. Step 2: Convert to fraction form
    1,252.88/1,878.88 = 522.32/x
  3. Step 3: Cross multiply
    1,252.88x = 1,878.88 × 522.32
  4. Step 4: Simplify right side
    1,252.88x = 981,376.60
  5. Step 5: Solve for x
    x = 981,376.60/1,252.88
  6. Step 6: Final answer
    x = 783.30

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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.