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Finding the Fourth Proportional to 532.62, 734.25 and 408

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Solution

The fourth proportional to 532.62, 734.25 and 408 is: 562.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.62 : 734.25 = 408 : x
  2. Step 2: Convert to fraction form
    532.62/734.25 = 408/x
  3. Step 3: Cross multiply
    532.62x = 734.25 × 408
  4. Step 4: Simplify right side
    532.62x = 299,574
  5. Step 5: Solve for x
    x = 299,574/532.62
  6. Step 6: Final answer
    x = 562.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.