Home / 1,148.15-1,584.45-624.18

Finding the Fourth Proportional to 1,148.15, 1,584.45 and 624.18

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Solution

The fourth proportional to 1,148.15, 1,584.45 and 624.18 is: 861.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.15 : 1,584.45 = 624.18 : x
  2. Step 2: Convert to fraction form
    1,148.15/1,584.45 = 624.18/x
  3. Step 3: Cross multiply
    1,148.15x = 1,584.45 × 624.18
  4. Step 4: Simplify right side
    1,148.15x = 988,978.88
  5. Step 5: Solve for x
    x = 988,978.88/1,148.15
  6. Step 6: Final answer
    x = 861.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.