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Finding the Fourth Proportional to 973.94, 1,343.49 and 581.09

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Solution

The fourth proportional to 973.94, 1,343.49 and 581.09 is: 801.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.94 : 1,343.49 = 581.09 : x
  2. Step 2: Convert to fraction form
    973.94/1,343.49 = 581.09/x
  3. Step 3: Cross multiply
    973.94x = 1,343.49 × 581.09
  4. Step 4: Simplify right side
    973.94x = 780,688.60
  5. Step 5: Solve for x
    x = 780,688.60/973.94
  6. Step 6: Final answer
    x = 801.58

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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.