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Finding the Fourth Proportional to 1,264.04, 1,902.78 and 901.34

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Solution

The fourth proportional to 1,264.04, 1,902.78 and 901.34 is: 1,356.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.04 : 1,902.78 = 901.34 : x
  2. Step 2: Convert to fraction form
    1,264.04/1,902.78 = 901.34/x
  3. Step 3: Cross multiply
    1,264.04x = 1,902.78 × 901.34
  4. Step 4: Simplify right side
    1,264.04x = 1,715,051.73
  5. Step 5: Solve for x
    x = 1,715,051.73/1,264.04
  6. Step 6: Final answer
    x = 1,356.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.