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Finding the Fourth Proportional to 832.68, 1,149.57 and 740.40

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Solution

The fourth proportional to 832.68, 1,149.57 and 740.40 is: 1,022.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    832.68 : 1,149.57 = 740.40 : x
  2. Step 2: Convert to fraction form
    832.68/1,149.57 = 740.40/x
  3. Step 3: Cross multiply
    832.68x = 1,149.57 × 740.40
  4. Step 4: Simplify right side
    832.68x = 851,141.63
  5. Step 5: Solve for x
    x = 851,141.63/832.68
  6. Step 6: Final answer
    x = 1,022.17

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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.