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Finding the Fourth Proportional to 424.51, 585.43 and 277.09

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Solution

The fourth proportional to 424.51, 585.43 and 277.09 is: 382.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.51 : 585.43 = 277.09 : x
  2. Step 2: Convert to fraction form
    424.51/585.43 = 277.09/x
  3. Step 3: Cross multiply
    424.51x = 585.43 × 277.09
  4. Step 4: Simplify right side
    424.51x = 162,214.64
  5. Step 5: Solve for x
    x = 162,214.64/424.51
  6. Step 6: Final answer
    x = 382.12

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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.