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Finding the Fourth Proportional to 532.95, 734.70 and 385.35

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Solution

The fourth proportional to 532.95, 734.70 and 385.35 is: 531.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.95 : 734.70 = 385.35 : x
  2. Step 2: Convert to fraction form
    532.95/734.70 = 385.35/x
  3. Step 3: Cross multiply
    532.95x = 734.70 × 385.35
  4. Step 4: Simplify right side
    532.95x = 283,116.65
  5. Step 5: Solve for x
    x = 283,116.65/532.95
  6. Step 6: Final answer
    x = 531.23

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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.