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Finding the Fourth Proportional to 1,022.79, 1,534.46 and 292.43

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Solution

The fourth proportional to 1,022.79, 1,534.46 and 292.43 is: 438.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.79 : 1,534.46 = 292.43 : x
  2. Step 2: Convert to fraction form
    1,022.79/1,534.46 = 292.43/x
  3. Step 3: Cross multiply
    1,022.79x = 1,534.46 × 292.43
  4. Step 4: Simplify right side
    1,022.79x = 448,722.14
  5. Step 5: Solve for x
    x = 448,722.14/1,022.79
  6. Step 6: Final answer
    x = 438.72

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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.