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Finding the Fourth Proportional to 1,252.82, 1,878.75 and 558.81

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Solution

The fourth proportional to 1,252.82, 1,878.75 and 558.81 is: 838.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.82 : 1,878.75 = 558.81 : x
  2. Step 2: Convert to fraction form
    1,252.82/1,878.75 = 558.81/x
  3. Step 3: Cross multiply
    1,252.82x = 1,878.75 × 558.81
  4. Step 4: Simplify right side
    1,252.82x = 1,049,864.29
  5. Step 5: Solve for x
    x = 1,049,864.29/1,252.82
  6. Step 6: Final answer
    x = 838.00

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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.