Home / 1,122.14-1,548.60-624.77

Finding the Fourth Proportional to 1,122.14, 1,548.60 and 624.77

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Solution

The fourth proportional to 1,122.14, 1,548.60 and 624.77 is: 862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.14 : 1,548.60 = 624.77 : x
  2. Step 2: Convert to fraction form
    1,122.14/1,548.60 = 624.77/x
  3. Step 3: Cross multiply
    1,122.14x = 1,548.60 × 624.77
  4. Step 4: Simplify right side
    1,122.14x = 967,518.82
  5. Step 5: Solve for x
    x = 967,518.82/1,122.14
  6. Step 6: Final answer
    x = 862.21

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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.