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Finding the Fourth Proportional to 1,345.52, 2,015.97 and 651.23

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Solution

The fourth proportional to 1,345.52, 2,015.97 and 651.23 is: 975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.52 : 2,015.97 = 651.23 : x
  2. Step 2: Convert to fraction form
    1,345.52/2,015.97 = 651.23/x
  3. Step 3: Cross multiply
    1,345.52x = 2,015.97 × 651.23
  4. Step 4: Simplify right side
    1,345.52x = 1,312,861.01
  5. Step 5: Solve for x
    x = 1,312,861.01/1,345.52
  6. Step 6: Final answer
    x = 975.73

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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.