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Finding the Fourth Proportional to 832.89, 1,149.45 and 483.63

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Solution

The fourth proportional to 832.89, 1,149.45 and 483.63 is: 667.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.89 : 1,149.45 = 483.63 : x
  2. Step 2: Convert to fraction form
    832.89/1,149.45 = 483.63/x
  3. Step 3: Cross multiply
    832.89x = 1,149.45 × 483.63
  4. Step 4: Simplify right side
    832.89x = 555,908.50
  5. Step 5: Solve for x
    x = 555,908.50/832.89
  6. Step 6: Final answer
    x = 667.45

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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.