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Finding the Fourth Proportional to 1,049.72, 1,572.04 and 529.04

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Solution

The fourth proportional to 1,049.72, 1,572.04 and 529.04 is: 792.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,049.72 : 1,572.04 = 529.04 : x
  2. Step 2: Convert to fraction form
    1,049.72/1,572.04 = 529.04/x
  3. Step 3: Cross multiply
    1,049.72x = 1,572.04 × 529.04
  4. Step 4: Simplify right side
    1,049.72x = 831,672.04
  5. Step 5: Solve for x
    x = 831,672.04/1,049.72
  6. Step 6: Final answer
    x = 792.28

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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.