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Finding the Fourth Proportional to 658.68, 982.59 and 612.12

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Solution

The fourth proportional to 658.68, 982.59 and 612.12 is: 913.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.68 : 982.59 = 612.12 : x
  2. Step 2: Convert to fraction form
    658.68/982.59 = 612.12/x
  3. Step 3: Cross multiply
    658.68x = 982.59 × 612.12
  4. Step 4: Simplify right side
    658.68x = 601,462.99
  5. Step 5: Solve for x
    x = 601,462.99/658.68
  6. Step 6: Final answer
    x = 913.13

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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.