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Finding the Fourth Proportional to 868.04, 1,301.34 and 405.58

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Solution

The fourth proportional to 868.04, 1,301.34 and 405.58 is: 608.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.04 : 1,301.34 = 405.58 : x
  2. Step 2: Convert to fraction form
    868.04/1,301.34 = 405.58/x
  3. Step 3: Cross multiply
    868.04x = 1,301.34 × 405.58
  4. Step 4: Simplify right side
    868.04x = 527,797.48
  5. Step 5: Solve for x
    x = 527,797.48/868.04
  6. Step 6: Final answer
    x = 608.03

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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.