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Finding the Fourth Proportional to 582.35, 803.62 and 320.38

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Solution

The fourth proportional to 582.35, 803.62 and 320.38 is: 442.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.35 : 803.62 = 320.38 : x
  2. Step 2: Convert to fraction form
    582.35/803.62 = 320.38/x
  3. Step 3: Cross multiply
    582.35x = 803.62 × 320.38
  4. Step 4: Simplify right side
    582.35x = 257,460.97
  5. Step 5: Solve for x
    x = 257,460.97/582.35
  6. Step 6: Final answer
    x = 442.11

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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.