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Finding the Fourth Proportional to 722.04, 996.54 and 427.32

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Solution

The fourth proportional to 722.04, 996.54 and 427.32 is: 589.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.04 : 996.54 = 427.32 : x
  2. Step 2: Convert to fraction form
    722.04/996.54 = 427.32/x
  3. Step 3: Cross multiply
    722.04x = 996.54 × 427.32
  4. Step 4: Simplify right side
    722.04x = 425,841.47
  5. Step 5: Solve for x
    x = 425,841.47/722.04
  6. Step 6: Final answer
    x = 589.78

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1.5x scale

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.