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Finding the Fourth Proportional to 650.30, 975.45 and 217.40

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Solution

The fourth proportional to 650.30, 975.45 and 217.40 is: 326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.30 : 975.45 = 217.40 : x
  2. Step 2: Convert to fraction form
    650.30/975.45 = 217.40/x
  3. Step 3: Cross multiply
    650.30x = 975.45 × 217.40
  4. Step 4: Simplify right side
    650.30x = 212,062.83
  5. Step 5: Solve for x
    x = 212,062.83/650.30
  6. Step 6: Final answer
    x = 326.10

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1.5x scale

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.