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Finding the Fourth Proportional to 973.53, 1,343.42 and 553.87

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Solution

The fourth proportional to 973.53, 1,343.42 and 553.87 is: 764.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.53 : 1,343.42 = 553.87 : x
  2. Step 2: Convert to fraction form
    973.53/1,343.42 = 553.87/x
  3. Step 3: Cross multiply
    973.53x = 1,343.42 × 553.87
  4. Step 4: Simplify right side
    973.53x = 744,080.04
  5. Step 5: Solve for x
    x = 744,080.04/973.53
  6. Step 6: Final answer
    x = 764.31

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