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Finding the Fourth Proportional to 1,125.07, 1,687.59 and 508.33

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Solution

The fourth proportional to 1,125.07, 1,687.59 and 508.33 is: 762.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.07 : 1,687.59 = 508.33 : x
  2. Step 2: Convert to fraction form
    1,125.07/1,687.59 = 508.33/x
  3. Step 3: Cross multiply
    1,125.07x = 1,687.59 × 508.33
  4. Step 4: Simplify right side
    1,125.07x = 857,852.62
  5. Step 5: Solve for x
    x = 857,852.62/1,125.07
  6. Step 6: Final answer
    x = 762.49

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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.