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Finding the Fourth Proportional to 1,344.74, 2,017.70 and 651.94

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Solution

The fourth proportional to 1,344.74, 2,017.70 and 651.94 is: 978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.74 : 2,017.70 = 651.94 : x
  2. Step 2: Convert to fraction form
    1,344.74/2,017.70 = 651.94/x
  3. Step 3: Cross multiply
    1,344.74x = 2,017.70 × 651.94
  4. Step 4: Simplify right side
    1,344.74x = 1,315,419.34
  5. Step 5: Solve for x
    x = 1,315,419.34/1,344.74
  6. Step 6: Final answer
    x = 978.20

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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.