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Finding the Fourth Proportional to 710.36, 979.48 and 500.46

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Solution

The fourth proportional to 710.36, 979.48 and 500.46 is: 690.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.36 : 979.48 = 500.46 : x
  2. Step 2: Convert to fraction form
    710.36/979.48 = 500.46/x
  3. Step 3: Cross multiply
    710.36x = 979.48 × 500.46
  4. Step 4: Simplify right side
    710.36x = 490,190.56
  5. Step 5: Solve for x
    x = 490,190.56/710.36
  6. Step 6: Final answer
    x = 690.06

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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.