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Finding the Fourth Proportional to 813.82, 1,122.93 and 592.84

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Solution

The fourth proportional to 813.82, 1,122.93 and 592.84 is: 818.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    813.82 : 1,122.93 = 592.84 : x
  2. Step 2: Convert to fraction form
    813.82/1,122.93 = 592.84/x
  3. Step 3: Cross multiply
    813.82x = 1,122.93 × 592.84
  4. Step 4: Simplify right side
    813.82x = 665,717.82
  5. Step 5: Solve for x
    x = 665,717.82/813.82
  6. Step 6: Final answer
    x = 818.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.