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Finding the Fourth Proportional to 621.93, 933.12 and 275.08

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Solution

The fourth proportional to 621.93, 933.12 and 275.08 is: 412.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.93 : 933.12 = 275.08 : x
  2. Step 2: Convert to fraction form
    621.93/933.12 = 275.08/x
  3. Step 3: Cross multiply
    621.93x = 933.12 × 275.08
  4. Step 4: Simplify right side
    621.93x = 256,686.00
  5. Step 5: Solve for x
    x = 256,686.00/621.93
  6. Step 6: Final answer
    x = 412.73

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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.