Home / 1,122.20-1,548.65-624.82

Finding the Fourth Proportional to 1,122.20, 1,548.65 and 624.82

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Solution

The fourth proportional to 1,122.20, 1,548.65 and 624.82 is: 862.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.20 : 1,548.65 = 624.82 : x
  2. Step 2: Convert to fraction form
    1,122.20/1,548.65 = 624.82/x
  3. Step 3: Cross multiply
    1,122.20x = 1,548.65 × 624.82
  4. Step 4: Simplify right side
    1,122.20x = 967,627.49
  5. Step 5: Solve for x
    x = 967,627.49/1,122.20
  6. Step 6: Final answer
    x = 862.26

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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.