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Finding the Fourth Proportional to 659.81, 982.75 and 625.12

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Solution

The fourth proportional to 659.81, 982.75 and 625.12 is: 931.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.81 : 982.75 = 625.12 : x
  2. Step 2: Convert to fraction form
    659.81/982.75 = 625.12/x
  3. Step 3: Cross multiply
    659.81x = 982.75 × 625.12
  4. Step 4: Simplify right side
    659.81x = 614,333.83
  5. Step 5: Solve for x
    x = 614,333.83/659.81
  6. Step 6: Final answer
    x = 931.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.