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Finding the Fourth Proportional to 582.87, 871.90 and 478.99

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Solution

The fourth proportional to 582.87, 871.90 and 478.99 is: 716.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.87 : 871.90 = 478.99 : x
  2. Step 2: Convert to fraction form
    582.87/871.90 = 478.99/x
  3. Step 3: Cross multiply
    582.87x = 871.90 × 478.99
  4. Step 4: Simplify right side
    582.87x = 417,631.38
  5. Step 5: Solve for x
    x = 417,631.38/582.87
  6. Step 6: Final answer
    x = 716.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.