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Finding the Fourth Proportional to 582.10, 803.31 and 316.55

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Solution

The fourth proportional to 582.10, 803.31 and 316.55 is: 436.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.10 : 803.31 = 316.55 : x
  2. Step 2: Convert to fraction form
    582.10/803.31 = 316.55/x
  3. Step 3: Cross multiply
    582.10x = 803.31 × 316.55
  4. Step 4: Simplify right side
    582.10x = 254,286.20
  5. Step 5: Solve for x
    x = 254,286.20/582.10
  6. Step 6: Final answer
    x = 436.85

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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.