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Finding the Fourth Proportional to 973.08, 1,343.25 and 891.54

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Solution

The fourth proportional to 973.08, 1,343.25 and 891.54 is: 1,230.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.08 : 1,343.25 = 891.54 : x
  2. Step 2: Convert to fraction form
    973.08/1,343.25 = 891.54/x
  3. Step 3: Cross multiply
    973.08x = 1,343.25 × 891.54
  4. Step 4: Simplify right side
    973.08x = 1,197,561.11
  5. Step 5: Solve for x
    x = 1,197,561.11/973.08
  6. Step 6: Final answer
    x = 1,230.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.