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Finding the Fourth Proportional to 832.41, 1,149.21 and 553.03

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Solution

The fourth proportional to 832.41, 1,149.21 and 553.03 is: 763.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.41 : 1,149.21 = 553.03 : x
  2. Step 2: Convert to fraction form
    832.41/1,149.21 = 553.03/x
  3. Step 3: Cross multiply
    832.41x = 1,149.21 × 553.03
  4. Step 4: Simplify right side
    832.41x = 635,547.61
  5. Step 5: Solve for x
    x = 635,547.61/832.41
  6. Step 6: Final answer
    x = 763.50

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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.