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Finding the Fourth Proportional to 709.99, 979.36 and 552.04

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Solution

The fourth proportional to 709.99, 979.36 and 552.04 is: 761.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.99 : 979.36 = 552.04 : x
  2. Step 2: Convert to fraction form
    709.99/979.36 = 552.04/x
  3. Step 3: Cross multiply
    709.99x = 979.36 × 552.04
  4. Step 4: Simplify right side
    709.99x = 540,642.07
  5. Step 5: Solve for x
    x = 540,642.07/709.99
  6. Step 6: Final answer
    x = 761.48

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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.