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Finding the Fourth Proportional to 670.68, 926.10 and 450.36

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Solution

The fourth proportional to 670.68, 926.10 and 450.36 is: 621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.68 : 926.10 = 450.36 : x
  2. Step 2: Convert to fraction form
    670.68/926.10 = 450.36/x
  3. Step 3: Cross multiply
    670.68x = 926.10 × 450.36
  4. Step 4: Simplify right side
    670.68x = 417,078.40
  5. Step 5: Solve for x
    x = 417,078.40/670.68
  6. Step 6: Final answer
    x = 621.87

Related Problems

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Double scale
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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.