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Finding the Fourth Proportional to 621.02, 930.62 and 347.04

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Solution

The fourth proportional to 621.02, 930.62 and 347.04 is: 520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.02 : 930.62 = 347.04 : x
  2. Step 2: Convert to fraction form
    621.02/930.62 = 347.04/x
  3. Step 3: Cross multiply
    621.02x = 930.62 × 347.04
  4. Step 4: Simplify right side
    621.02x = 322,960.63
  5. Step 5: Solve for x
    x = 322,960.63/621.02
  6. Step 6: Final answer
    x = 520.05

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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.