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Finding the Fourth Proportional to 1,265.11, 1,897.32 and 606.58

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Solution

The fourth proportional to 1,265.11, 1,897.32 and 606.58 is: 909.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.11 : 1,897.32 = 606.58 : x
  2. Step 2: Convert to fraction form
    1,265.11/1,897.32 = 606.58/x
  3. Step 3: Cross multiply
    1,265.11x = 1,897.32 × 606.58
  4. Step 4: Simplify right side
    1,265.11x = 1,150,876.37
  5. Step 5: Solve for x
    x = 1,150,876.37/1,265.11
  6. Step 6: Final answer
    x = 909.70

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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.