Home / 1,148.12-1,584.39-624.15

Finding the Fourth Proportional to 1,148.12, 1,584.39 and 624.15

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Solution

The fourth proportional to 1,148.12, 1,584.39 and 624.15 is: 861.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.12 : 1,584.39 = 624.15 : x
  2. Step 2: Convert to fraction form
    1,148.12/1,584.39 = 624.15/x
  3. Step 3: Cross multiply
    1,148.12x = 1,584.39 × 624.15
  4. Step 4: Simplify right side
    1,148.12x = 988,897.02
  5. Step 5: Solve for x
    x = 988,897.02/1,148.12
  6. Step 6: Final answer
    x = 861.32

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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.