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Finding the Fourth Proportional to 621.45, 925.73 and 607.05

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Solution

The fourth proportional to 621.45, 925.73 and 607.05 is: 904.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.45 : 925.73 = 607.05 : x
  2. Step 2: Convert to fraction form
    621.45/925.73 = 607.05/x
  3. Step 3: Cross multiply
    621.45x = 925.73 × 607.05
  4. Step 4: Simplify right side
    621.45x = 561,965.91
  5. Step 5: Solve for x
    x = 561,965.91/621.45
  6. Step 6: Final answer
    x = 904.28

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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.