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Finding the Fourth Proportional to 1,143.50, 1,714.91 and 363.47

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Solution

The fourth proportional to 1,143.50, 1,714.91 and 363.47 is: 545.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.50 : 1,714.91 = 363.47 : x
  2. Step 2: Convert to fraction form
    1,143.50/1,714.91 = 363.47/x
  3. Step 3: Cross multiply
    1,143.50x = 1,714.91 × 363.47
  4. Step 4: Simplify right side
    1,143.50x = 623,318.34
  5. Step 5: Solve for x
    x = 623,318.34/1,143.50
  6. Step 6: Final answer
    x = 545.10

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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.