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Finding the Fourth Proportional to 482.48, 724.00 and 478.57

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Solution

The fourth proportional to 482.48, 724.00 and 478.57 is: 718.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.48 : 724.00 = 478.57 : x
  2. Step 2: Convert to fraction form
    482.48/724.00 = 478.57/x
  3. Step 3: Cross multiply
    482.48x = 724.00 × 478.57
  4. Step 4: Simplify right side
    482.48x = 346,481.67
  5. Step 5: Solve for x
    x = 346,481.67/482.48
  6. Step 6: Final answer
    x = 718.12

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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.