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Finding the Fourth Proportional to 2,228.61, 3,342.78 and 585.12

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Solution

The fourth proportional to 2,228.61, 3,342.78 and 585.12 is: 877.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.61 : 3,342.78 = 585.12 : x
  2. Step 2: Convert to fraction form
    2,228.61/3,342.78 = 585.12/x
  3. Step 3: Cross multiply
    2,228.61x = 3,342.78 × 585.12
  4. Step 4: Simplify right side
    2,228.61x = 1,955,924.51
  5. Step 5: Solve for x
    x = 1,955,924.51/2,228.61
  6. Step 6: Final answer
    x = 877.64

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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.