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Finding the Fourth Proportional to 885.05, 1,327.58 and 611.06

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Solution

The fourth proportional to 885.05, 1,327.58 and 611.06 is: 916.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.05 : 1,327.58 = 611.06 : x
  2. Step 2: Convert to fraction form
    885.05/1,327.58 = 611.06/x
  3. Step 3: Cross multiply
    885.05x = 1,327.58 × 611.06
  4. Step 4: Simplify right side
    885.05x = 811,221.34
  5. Step 5: Solve for x
    x = 811,221.34/885.05
  6. Step 6: Final answer
    x = 916.59

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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.