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Finding the Fourth Proportional to 582.57, 803.96 and 320.58

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Solution

The fourth proportional to 582.57, 803.96 and 320.58 is: 442.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.57 : 803.96 = 320.58 : x
  2. Step 2: Convert to fraction form
    582.57/803.96 = 320.58/x
  3. Step 3: Cross multiply
    582.57x = 803.96 × 320.58
  4. Step 4: Simplify right side
    582.57x = 257,731.89
  5. Step 5: Solve for x
    x = 257,731.89/582.57
  6. Step 6: Final answer
    x = 442.41

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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.