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Finding the Fourth Proportional to 1,264.60, 1,897.10 and 484.57

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Solution

The fourth proportional to 1,264.60, 1,897.10 and 484.57 is: 726.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.60 : 1,897.10 = 484.57 : x
  2. Step 2: Convert to fraction form
    1,264.60/1,897.10 = 484.57/x
  3. Step 3: Cross multiply
    1,264.60x = 1,897.10 × 484.57
  4. Step 4: Simplify right side
    1,264.60x = 919,277.75
  5. Step 5: Solve for x
    x = 919,277.75/1,264.60
  6. Step 6: Final answer
    x = 726.93

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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.