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Finding the Fourth Proportional to 649.10, 973.28 and 340.62

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Solution

The fourth proportional to 649.10, 973.28 and 340.62 is: 510.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.10 : 973.28 = 340.62 : x
  2. Step 2: Convert to fraction form
    649.10/973.28 = 340.62/x
  3. Step 3: Cross multiply
    649.10x = 973.28 × 340.62
  4. Step 4: Simplify right side
    649.10x = 331,516.93
  5. Step 5: Solve for x
    x = 331,516.93/649.10
  6. Step 6: Final answer
    x = 510.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.