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Finding the Fourth Proportional to 582.82, 803.50 and 458

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Solution

The fourth proportional to 582.82, 803.50 and 458 is: 631.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.82 : 803.50 = 458 : x
  2. Step 2: Convert to fraction form
    582.82/803.50 = 458/x
  3. Step 3: Cross multiply
    582.82x = 803.50 × 458
  4. Step 4: Simplify right side
    582.82x = 368,003
  5. Step 5: Solve for x
    x = 368,003/582.82
  6. Step 6: Final answer
    x = 631.42

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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.