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Finding the Fourth Proportional to 973.45, 1,343.38 and 531.37

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Solution

The fourth proportional to 973.45, 1,343.38 and 531.37 is: 733.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.45 : 1,343.38 = 531.37 : x
  2. Step 2: Convert to fraction form
    973.45/1,343.38 = 531.37/x
  3. Step 3: Cross multiply
    973.45x = 1,343.38 × 531.37
  4. Step 4: Simplify right side
    973.45x = 713,827.14
  5. Step 5: Solve for x
    x = 713,827.14/973.45
  6. Step 6: Final answer
    x = 733.30

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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.