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Finding the Fourth Proportional to 651.05, 975.65 and 326.64

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Solution

The fourth proportional to 651.05, 975.65 and 326.64 is: 489.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.05 : 975.65 = 326.64 : x
  2. Step 2: Convert to fraction form
    651.05/975.65 = 326.64/x
  3. Step 3: Cross multiply
    651.05x = 975.65 × 326.64
  4. Step 4: Simplify right side
    651.05x = 318,684.68
  5. Step 5: Solve for x
    x = 318,684.68/651.05
  6. Step 6: Final answer
    x = 489.50

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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.