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Finding the Fourth Proportional to 875.88, 1,313.28 and 586.44

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Solution

The fourth proportional to 875.88, 1,313.28 and 586.44 is: 879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.88 : 1,313.28 = 586.44 : x
  2. Step 2: Convert to fraction form
    875.88/1,313.28 = 586.44/x
  3. Step 3: Cross multiply
    875.88x = 1,313.28 × 586.44
  4. Step 4: Simplify right side
    875.88x = 770,159.92
  5. Step 5: Solve for x
    x = 770,159.92/875.88
  6. Step 6: Final answer
    x = 879.30

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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.