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Finding the Fourth Proportional to 621.02, 931.50 and 377.03

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Solution

The fourth proportional to 621.02, 931.50 and 377.03 is: 565.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.02 : 931.50 = 377.03 : x
  2. Step 2: Convert to fraction form
    621.02/931.50 = 377.03/x
  3. Step 3: Cross multiply
    621.02x = 931.50 × 377.03
  4. Step 4: Simplify right side
    621.02x = 351,203.45
  5. Step 5: Solve for x
    x = 351,203.45/621.02
  6. Step 6: Final answer
    x = 565.53

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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.