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Finding the Fourth Proportional to 595.80, 822.17 and 330.21

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Solution

The fourth proportional to 595.80, 822.17 and 330.21 is: 455.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    595.80 : 822.17 = 330.21 : x
  2. Step 2: Convert to fraction form
    595.80/822.17 = 330.21/x
  3. Step 3: Cross multiply
    595.80x = 822.17 × 330.21
  4. Step 4: Simplify right side
    595.80x = 271,489.58
  5. Step 5: Solve for x
    x = 271,489.58/595.80
  6. Step 6: Final answer
    x = 455.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.