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Finding the Fourth Proportional to 582.31, 803.60 and 320.33

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Solution

The fourth proportional to 582.31, 803.60 and 320.33 is: 442.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.31 : 803.60 = 320.33 : x
  2. Step 2: Convert to fraction form
    582.31/803.60 = 320.33/x
  3. Step 3: Cross multiply
    582.31x = 803.60 × 320.33
  4. Step 4: Simplify right side
    582.31x = 257,417.38
  5. Step 5: Solve for x
    x = 257,417.38/582.31
  6. Step 6: Final answer
    x = 442.06

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1.5x scale

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.