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Finding the Fourth Proportional to 582.49, 803.87 and 320.51

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Solution

The fourth proportional to 582.49, 803.87 and 320.51 is: 442.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.49 : 803.87 = 320.51 : x
  2. Step 2: Convert to fraction form
    582.49/803.87 = 320.51/x
  3. Step 3: Cross multiply
    582.49x = 803.87 × 320.51
  4. Step 4: Simplify right side
    582.49x = 257,647.26
  5. Step 5: Solve for x
    x = 257,647.26/582.49
  6. Step 6: Final answer
    x = 442.32

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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.