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Finding the Fourth Proportional to 688.33, 949.35 and 467.20

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Solution

The fourth proportional to 688.33, 949.35 and 467.20 is: 644.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.33 : 949.35 = 467.20 : x
  2. Step 2: Convert to fraction form
    688.33/949.35 = 467.20/x
  3. Step 3: Cross multiply
    688.33x = 949.35 × 467.20
  4. Step 4: Simplify right side
    688.33x = 443,536.32
  5. Step 5: Solve for x
    x = 443,536.32/688.33
  6. Step 6: Final answer
    x = 644.37

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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.