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Finding the Fourth Proportional to 650.94, 977.30 and 621.54

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Solution

The fourth proportional to 650.94, 977.30 and 621.54 is: 933.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.94 : 977.30 = 621.54 : x
  2. Step 2: Convert to fraction form
    650.94/977.30 = 621.54/x
  3. Step 3: Cross multiply
    650.94x = 977.30 × 621.54
  4. Step 4: Simplify right side
    650.94x = 607,431.04
  5. Step 5: Solve for x
    x = 607,431.04/650.94
  6. Step 6: Final answer
    x = 933.16

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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.