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Finding the Fourth Proportional to 937.65, 1,406.88 and 450.84

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Solution

The fourth proportional to 937.65, 1,406.88 and 450.84 is: 676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.65 : 1,406.88 = 450.84 : x
  2. Step 2: Convert to fraction form
    937.65/1,406.88 = 450.84/x
  3. Step 3: Cross multiply
    937.65x = 1,406.88 × 450.84
  4. Step 4: Simplify right side
    937.65x = 634,277.78
  5. Step 5: Solve for x
    x = 634,277.78/937.65
  6. Step 6: Final answer
    x = 676.45

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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.