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Finding the Fourth Proportional to 1,122.27, 1,548.67 and 624.91

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Solution

The fourth proportional to 1,122.27, 1,548.67 and 624.91 is: 862.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.27 : 1,548.67 = 624.91 : x
  2. Step 2: Convert to fraction form
    1,122.27/1,548.67 = 624.91/x
  3. Step 3: Cross multiply
    1,122.27x = 1,548.67 × 624.91
  4. Step 4: Simplify right side
    1,122.27x = 967,779.37
  5. Step 5: Solve for x
    x = 967,779.37/1,122.27
  6. Step 6: Final answer
    x = 862.34

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1.5x scale

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.