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Finding the Fourth Proportional to 1,022.56, 1,532.88 and 474.46

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Solution

The fourth proportional to 1,022.56, 1,532.88 and 474.46 is: 711.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.56 : 1,532.88 = 474.46 : x
  2. Step 2: Convert to fraction form
    1,022.56/1,532.88 = 474.46/x
  3. Step 3: Cross multiply
    1,022.56x = 1,532.88 × 474.46
  4. Step 4: Simplify right side
    1,022.56x = 727,290.24
  5. Step 5: Solve for x
    x = 727,290.24/1,022.56
  6. Step 6: Final answer
    x = 711.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.