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Finding the Fourth Proportional to 407.43, 608.04 and 355.59

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Solution

The fourth proportional to 407.43, 608.04 and 355.59 is: 530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.43 : 608.04 = 355.59 : x
  2. Step 2: Convert to fraction form
    407.43/608.04 = 355.59/x
  3. Step 3: Cross multiply
    407.43x = 608.04 × 355.59
  4. Step 4: Simplify right side
    407.43x = 216,212.94
  5. Step 5: Solve for x
    x = 216,212.94/407.43
  6. Step 6: Final answer
    x = 530.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.