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Finding the Fourth Proportional to 621.68, 926.46 and 602.90

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Solution

The fourth proportional to 621.68, 926.46 and 602.90 is: 898.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.68 : 926.46 = 602.90 : x
  2. Step 2: Convert to fraction form
    621.68/926.46 = 602.90/x
  3. Step 3: Cross multiply
    621.68x = 926.46 × 602.90
  4. Step 4: Simplify right side
    621.68x = 558,565.05
  5. Step 5: Solve for x
    x = 558,565.05/621.68
  6. Step 6: Final answer
    x = 898.48

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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.