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Finding the Fourth Proportional to 875.63, 1,313.51 and 250.92

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Solution

The fourth proportional to 875.63, 1,313.51 and 250.92 is: 376.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.63 : 1,313.51 = 250.92 : x
  2. Step 2: Convert to fraction form
    875.63/1,313.51 = 250.92/x
  3. Step 3: Cross multiply
    875.63x = 1,313.51 × 250.92
  4. Step 4: Simplify right side
    875.63x = 329,578.11
  5. Step 5: Solve for x
    x = 329,578.11/875.63
  6. Step 6: Final answer
    x = 376.39

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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.