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Finding the Fourth Proportional to 589.44, 813.51 and 424.20

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Solution

The fourth proportional to 589.44, 813.51 and 424.20 is: 585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.44 : 813.51 = 424.20 : x
  2. Step 2: Convert to fraction form
    589.44/813.51 = 424.20/x
  3. Step 3: Cross multiply
    589.44x = 813.51 × 424.20
  4. Step 4: Simplify right side
    589.44x = 345,086.87
  5. Step 5: Solve for x
    x = 345,086.87/589.44
  6. Step 6: Final answer
    x = 585.45

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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.