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Finding the Fourth Proportional to 668.68, 997.49 and 590.92

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Solution

The fourth proportional to 668.68, 997.49 and 590.92 is: 881.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.68 : 997.49 = 590.92 : x
  2. Step 2: Convert to fraction form
    668.68/997.49 = 590.92/x
  3. Step 3: Cross multiply
    668.68x = 997.49 × 590.92
  4. Step 4: Simplify right side
    668.68x = 589,436.79
  5. Step 5: Solve for x
    x = 589,436.79/668.68
  6. Step 6: Final answer
    x = 881.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.