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Finding the Fourth Proportional to 956.22, 1,424.72 and 893.36

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Solution

The fourth proportional to 956.22, 1,424.72 and 893.36 is: 1,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.22 : 1,424.72 = 893.36 : x
  2. Step 2: Convert to fraction form
    956.22/1,424.72 = 893.36/x
  3. Step 3: Cross multiply
    956.22x = 1,424.72 × 893.36
  4. Step 4: Simplify right side
    956.22x = 1,272,779.62
  5. Step 5: Solve for x
    x = 1,272,779.62/956.22
  6. Step 6: Final answer
    x = 1,331.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.