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Finding the Fourth Proportional to 582.31, 803.57 and 320.32

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Solution

The fourth proportional to 582.31, 803.57 and 320.32 is: 442.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.31 : 803.57 = 320.32 : x
  2. Step 2: Convert to fraction form
    582.31/803.57 = 320.32/x
  3. Step 3: Cross multiply
    582.31x = 803.57 × 320.32
  4. Step 4: Simplify right side
    582.31x = 257,400.75
  5. Step 5: Solve for x
    x = 257,400.75/582.31
  6. Step 6: Final answer
    x = 442.04

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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.