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Finding the Fourth Proportional to 868.97, 1,303.99 and 355.97

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Solution

The fourth proportional to 868.97, 1,303.99 and 355.97 is: 534.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.97 : 1,303.99 = 355.97 : x
  2. Step 2: Convert to fraction form
    868.97/1,303.99 = 355.97/x
  3. Step 3: Cross multiply
    868.97x = 1,303.99 × 355.97
  4. Step 4: Simplify right side
    868.97x = 464,173.91
  5. Step 5: Solve for x
    x = 464,173.91/868.97
  6. Step 6: Final answer
    x = 534.17

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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.