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Finding the Fourth Proportional to 622.90, 934.95 and 531.70

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Solution

The fourth proportional to 622.90, 934.95 and 531.70 is: 798.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.90 : 934.95 = 531.70 : x
  2. Step 2: Convert to fraction form
    622.90/934.95 = 531.70/x
  3. Step 3: Cross multiply
    622.90x = 934.95 × 531.70
  4. Step 4: Simplify right side
    622.90x = 497,112.92
  5. Step 5: Solve for x
    x = 497,112.92/622.90
  6. Step 6: Final answer
    x = 798.06

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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.