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Finding the Fourth Proportional to 424.74, 585.63 and 330.24

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Solution

The fourth proportional to 424.74, 585.63 and 330.24 is: 455.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.74 : 585.63 = 330.24 : x
  2. Step 2: Convert to fraction form
    424.74/585.63 = 330.24/x
  3. Step 3: Cross multiply
    424.74x = 585.63 × 330.24
  4. Step 4: Simplify right side
    424.74x = 193,398.45
  5. Step 5: Solve for x
    x = 193,398.45/424.74
  6. Step 6: Final answer
    x = 455.33

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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.