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Finding the Fourth Proportional to 1,355.38, 2,032.73 and 651.89

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Solution

The fourth proportional to 1,355.38, 2,032.73 and 651.89 is: 977.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.38 : 2,032.73 = 651.89 : x
  2. Step 2: Convert to fraction form
    1,355.38/2,032.73 = 651.89/x
  3. Step 3: Cross multiply
    1,355.38x = 2,032.73 × 651.89
  4. Step 4: Simplify right side
    1,355.38x = 1,325,125.29
  5. Step 5: Solve for x
    x = 1,325,125.29/1,355.38
  6. Step 6: Final answer
    x = 977.68

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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.