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Finding the Fourth Proportional to 482.51, 723.15 and 424.85

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Solution

The fourth proportional to 482.51, 723.15 and 424.85 is: 636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.51 : 723.15 = 424.85 : x
  2. Step 2: Convert to fraction form
    482.51/723.15 = 424.85/x
  3. Step 3: Cross multiply
    482.51x = 723.15 × 424.85
  4. Step 4: Simplify right side
    482.51x = 307,226.66
  5. Step 5: Solve for x
    x = 307,226.66/482.51
  6. Step 6: Final answer
    x = 636.72

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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.