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Finding the Fourth Proportional to 1,920.99, 2,881.17 and 534.47

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Solution

The fourth proportional to 1,920.99, 2,881.17 and 534.47 is: 801.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.99 : 2,881.17 = 534.47 : x
  2. Step 2: Convert to fraction form
    1,920.99/2,881.17 = 534.47/x
  3. Step 3: Cross multiply
    1,920.99x = 2,881.17 × 534.47
  4. Step 4: Simplify right side
    1,920.99x = 1,539,898.93
  5. Step 5: Solve for x
    x = 1,539,898.93/1,920.99
  6. Step 6: Final answer
    x = 801.62

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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.