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Finding the Fourth Proportional to 973.24, 1,343.08 and 531.15

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Solution

The fourth proportional to 973.24, 1,343.08 and 531.15 is: 732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.24 : 1,343.08 = 531.15 : x
  2. Step 2: Convert to fraction form
    973.24/1,343.08 = 531.15/x
  3. Step 3: Cross multiply
    973.24x = 1,343.08 × 531.15
  4. Step 4: Simplify right side
    973.24x = 713,370.23
  5. Step 5: Solve for x
    x = 713,370.23/973.24
  6. Step 6: Final answer
    x = 732.98

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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.