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Finding the Fourth Proportional to 953.23, 1,315.42 and 539.23

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Solution

The fourth proportional to 953.23, 1,315.42 and 539.23 is: 744.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.23 : 1,315.42 = 539.23 : x
  2. Step 2: Convert to fraction form
    953.23/1,315.42 = 539.23/x
  3. Step 3: Cross multiply
    953.23x = 1,315.42 × 539.23
  4. Step 4: Simplify right side
    953.23x = 709,313.93
  5. Step 5: Solve for x
    x = 709,313.93/953.23
  6. Step 6: Final answer
    x = 744.12

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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.