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Finding the Fourth Proportional to 532.40, 734.83 and 322.74

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Solution

The fourth proportional to 532.40, 734.83 and 322.74 is: 445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.40 : 734.83 = 322.74 : x
  2. Step 2: Convert to fraction form
    532.40/734.83 = 322.74/x
  3. Step 3: Cross multiply
    532.40x = 734.83 × 322.74
  4. Step 4: Simplify right side
    532.40x = 237,158.23
  5. Step 5: Solve for x
    x = 237,158.23/532.40
  6. Step 6: Final answer
    x = 445.46

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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.