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Finding the Fourth Proportional to 883.32, 1,331.25 and 875.76

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Solution

The fourth proportional to 883.32, 1,331.25 and 875.76 is: 1,319.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.32 : 1,331.25 = 875.76 : x
  2. Step 2: Convert to fraction form
    883.32/1,331.25 = 875.76/x
  3. Step 3: Cross multiply
    883.32x = 1,331.25 × 875.76
  4. Step 4: Simplify right side
    883.32x = 1,165,855.50
  5. Step 5: Solve for x
    x = 1,165,855.50/883.32
  6. Step 6: Final answer
    x = 1,319.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.